Short Codeforces Problems

1549+ problems with statements under 1000 characters

Updated: 2026-04-21

Have fun :)

Problem Lists

Skill Level	Problems
Newbie	800 (246) • 900 (54) • 1000 (71) • 1100 (79)
Pupil	1200 (81) • 1300 (59)
Specialist	1400 (71) • 1500 (57)
Expert	1600 (91) • 1700 (63) • 1800 (69)
Candidate Master	1900 (85) • 2000 (56)
Master	2100 (56) • 2200 (57)
International Master	2300 (52)
Grandmaster	2400 (58) • 2500 (49)
International GM	2600 (34) • 2700 (30) • 2800 (23) • 2900 (26)
Legendary GM	3000 (22) • 3100 (23) • 3200 (10) • 3300 (6) • 3400 (5) • 3500 (16)

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Rating 800

#	ID	Problem	Rating
1	14A	Letter	800
2	16A	Flag	800
3	22A	Second Order Statistics	800
4	32A	Reconnaissance	800
5	32B	Borze	800
6	34A	Reconnaissance 2	800
7	38A	Army	800
8	41A	Translation	800
9	47A	Triangular numbers	800
10	49A	Sleuth	800
11	50A	Domino piling	800
12	59A	Word	800
13	112A	Petya and Strings	800
14	158A	Next Round	800
15	181A	Series of Crimes	800
16	214A	System of Equations	800
17	228A	Is your horseshoe on the other hoof?	800
18	266A	Stones on the Table	800
19	271A	Beautiful Year	800
20	281A	Word Capitalization	800
21	339A	Helpful Maths	800
22	384A	Coder	800
23	386A	Second-Price Auction	800
24	411A	Password Check	800
25	421A	Pasha and Hamsters	800
26	426A	Sereja and Mugs	800
27	440A	Forgotten Episode	800
28	443A	Anton and Letters	800
29	454A	Little Pony and Crystal Mine	800
30	467A	George and Accommodation	800
31	469A	I Wanna Be the Guy	800
32	472A	Design Tutorial: Learn from Math	800
33	486A	Calculating Function	800
34	492A	Vanya and Cubes	800
35	520A	Pangram	800
36	546A	Soldier and Bananas	800
37	581A	Vasya the Hipster	800
38	609A	Флеш-карты	800
39	615A	Bulbs	800
40	630A	Again Twenty Five!	800
41	648B	Собери стол	800
42	678A	Johny Likes Numbers	800
43	701A	Cards	800
44	702A	Maximum Increase	800
45	705A	Hulk	800
46	710A	King Moves	800
47	734A	Anton and Danik	800
48	749A	Bachgold Problem	800
49	802G	Fake News (easy)	800
50	831B	Keyboard Layouts	800
51	837A	Text Volume	800
52	884A	Book Reading	800
53	900A	Find Extra One	800
54	965A	Paper Airplanes	800
55	977A	Wrong Subtraction	800
56	978A	Remove Duplicates	800
57	984A	Game	800
58	988A	Diverse Team	800
59	996A	Hit the Lottery	800
60	1003A	Polycarp's Pockets	800
61	1005A	Tanya and Stairways	800
62	1028A	Find Square	800
63	1030A	In Search of an Easy Problem	800
64	1047A	Little C Loves 3 I	800
65	1056A	Determine Line	800
66	1061A	Coins	800
67	1065A	Vasya and Chocolate	800
68	1080A	Petya and Origami	800
69	1088A	Ehab and another construction problem	800
70	1096A	Find Divisible	800
71	1102A	Integer Sequence Dividing	800
72	1118A	Water Buying	800
73	1154A	Restoring Three Numbers	800
74	1176A	Divide it!	800
75	1183A	Nearest Interesting Number	800
76	1194A	Remove a Progression	800
77	1207A	There Are Two Types Of Burgers	800
78	1220A	Cards	800
79	1228A	Distinct Digits	800
80	1230A	Dawid and Bags of Candies	800
81	1269A	Equation	800
82	1283A	Minutes Before the New Year	800
83	1296A	Array with Odd Sum	800
84	1323A	Even Subset Sum Problem	800
85	1325A	EhAb AnD gCd	800
86	1325B	CopyCopyCopyCopyCopy	800
87	1328A	Divisibility Problem	800
88	1343B	Balanced Array	800
89	1351A	A+B (Trial Problem)	800
90	1352A	Sum of Round Numbers	800
91	1370A	Maximum GCD	800
92	1374A	Required Remainder	800
93	1385A	Three Pairwise Maximums	800
94	1389A	LCM Problem	800
95	1398A	Bad Triangle	800
96	1411A	In-game Chat	800
97	1421A	XORwice	800
98	1422A	Fence	800
99	1436A	Reorder	800
100	1445A	Array Rearrangment	800
101	1454A	Special Permutation	800
102	1454B	Unique Bid Auction	800
103	1472B	Fair Division	800
104	1493A	Anti-knapsack	800
105	1512A	Spy Detected!	800
106	1512B	Almost Rectangle	800
107	1513A	Array and Peaks	800
108	1514A	Perfectly Imperfect Array	800
109	1517A	Sum of 2050	800
110	1520B	Ordinary Numbers	800
111	1526A	Mean Inequality	800
112	1527A	And Then There Were K	800
113	1530A	Binary Decimal	800
114	1542A	Odd Set	800
115	1547A	Shortest Path with Obstacle	800
116	1553A	Digits Sum	800
117	1554A	Cherry	800
118	1560A	Dislike of Threes	800
119	1562A	The Miracle and the Sleeper	800
120	1585A	Life of a Flower	800
121	1593A	Elections	800
122	1594A	Consecutive Sum Riddle	800
123	1608A	Find Array	800
124	1616A	Integer Diversity	800
125	1619A	Square String?	800
126	1619B	Squares and Cubes	800
127	1633A	Div. 7	800
128	1644B	Anti-Fibonacci Permutation	800
129	1656A	Good Pairs	800
130	1657B	XY Sequence	800
131	1669A	Division?	800
132	1675A	Food for Animals	800
133	1684A	Digit Minimization	800
134	1684B	Z mod X = C	800
135	1691A	Beat The Odds	800
136	1699A	The Third Three Number Problem	800
137	1701A	Grass Field	800
138	1701B	Permutation	800
139	1703A	YES or YES?	800
140	1709A	Three Doors	800
141	1714C	Minimum Varied Number	800
142	1716A	2-3 Moves	800
143	1722A	Spell Check	800
144	1722B	Colourblindness	800
145	1722C	Word Game	800
146	1733A	Consecutive Sum	800
147	1740A	Factorise N+M	800
148	1742A	Sum	800
149	1742B	Increasing	800
150	1759A	Yes-Yes?	800
151	1760A	Medium Number	800
152	1766A	Extremely Round	800
153	1768A	Greatest Convex	800
154	1772A	A+B?	800
155	1774A	Add Plus Minus Sign	800
156	1778A	Flip Flop Sum	800
157	1787A	Exponential Equation	800
158	1788A	One and Two	800
159	1790A	Polycarp and the Day of Pi	800
160	1790B	Taisia and Dice	800
161	1791A	Codeforces Checking	800
162	1805A	We Need the Zero	800
163	1806A	Walking Master	800
164	1807A	Plus or Minus	800
165	1811A	Insert Digit	800
166	1814A	Coins	800
167	1822A	TubeTube Feed	800
168	1829A	Love Story	800
169	1829B	Blank Space	800
170	1829C	Mr. Perfectly Fine	800
171	1831A	Twin Permutations	800
172	1832A	New Palindrome	800
173	1833C	Vlad Building Beautiful Array	800
174	1837A	Grasshopper on a Line	800
175	1845A	Forbidden Integer	800
176	1846A	Rudolph and Cut the Rope	800
177	1846B	Rudolph and Tic-Tac-Toe	800
178	1850C	Word on the Paper	800
179	1862A	Gift Carpet	800
180	1864A	Increasing and Decreasing	800
181	1873B	Good Kid	800
182	1873C	Target Practice	800
183	1873D	1D Eraser	800
184	1882A	Increasing Sequence	800
185	1884A	Simple Design	800
186	1886A	Sum of Three	800
187	1890A	Doremy's Paint 3	800
188	1899A	Game with Integers	800
189	1907A	Rook	800
190	1914A	Problemsolving Log	800
191	1915A	Odd One Out	800
192	1915C	Can I Square?	800
193	1916A	2023	800
194	1921A	Square	800
195	1926A	Vlad and the Best of Five	800
196	1927A	Make it White	800
197	1929A	Sasha and the Beautiful Array	800
198	1934A	Too Min Too Max	800
199	1948A	Special Characters	800
200	1950A	Stair, Peak, or Neither?	800
201	1950B	Upscaling	800
202	1950C	Clock Conversion	800
203	1955A	Yogurt Sale	800
204	1957A	Stickogon	800
205	1968A	Maximize?	800
206	1971A	My First Sorting Problem	800
207	1971B	Different String	800
208	1977A	Little Nikita	800
209	1985A	Creating Words	800
210	1985B	Maximum Multiple Sum	800
211	1992A	Only Pluses	800
212	1996A	Legs	800
213	1999A	A+B Again?	800
214	2000A	Primary Task	800
215	2002A	Distanced Coloring	800
216	2009A	Minimize!	800
217	2009B	osu!mania	800
218	2010A	Alternating Sum of Numbers	800
219	2010B	Three Brothers	800
220	2036A	Quintomania	800
221	2043A	Coin Transformation	800
222	2044A	Easy Problem	800
223	2044B	Normal Problem	800
224	2044C	Hard Problem	800
225	2050A	Line Breaks	800
226	2060A	Fibonacciness	800
227	2067A	Adjacent Digit Sums	800
228	2069A	Was there an Array?	800
229	2091A	Olympiad Date	800
230	2091B	Team Training	800
231	2093A	Ideal Generator	800
232	2094A	Trippi Troppi	800
233	2114A	Square Year	800
234	2126A	Only One Digit	800
235	2141A	Furniture Store	800
236	2145A	Candies for Nephews	800
237	2148A	Sublime Sequence	800
238	2157A	Dungeon Equilibrium	800
239	2162A	Beautiful Average	800
240	2166A	Same Difference	800
241	2172A	ASCII Art Contest	800
242	2185A	Perfect Root	800
243	2193A	DBMB and the Array	800
244	2195A	Sieve of Erato67henes	800
245	2200A	Eating Game	800
246	2200B	Deletion Sort	800

Rating 900

#	ID	Problem	Rating
1	6A	Triangle	900
2	11A	Increasing Sequence	900
3	16B	Burglar and Matches	900
4	26A	Almost Prime	900
5	34B	Sale	900
6	44A	Indian Summer	900
7	52A	123-sequence	900
8	96A	Football	900
9	130A	Hexagonal numbers	900
10	263B	Squares	900
11	267A	Subtractions	900
12	275A	Lights Out	900
13	299B	Ksusha the Squirrel	900
14	318A	Even Odds	900
15	320A	Magic Numbers	900
16	424A	Squats	900
17	474A	Keyboard	900
18	598A	Tricky Sum	900
19	621A	Wet Shark and Odd and Even	900
20	622B	The Time	900
21	670A	Holidays	900
22	808A	Lucky Year	900
23	847G	University Classes	900
24	863A	Quasi-palindrome	900
25	870A	Search for Pretty Integers	900
26	892A	Greed	900
27	914A	Perfect Squares	900
28	980A	Links and Pearls	900
29	1047B	Cover Points	900
30	1057A	Bmail Computer Network	900
31	1095B	Array Stabilization	900
32	1110A	Parity	900
33	1175A	From Hero to Zero	900
34	1208A	XORinacci	900
35	1225A	Forgetting Things	900
36	1351B	Square?	900
37	1380A	Three Indices	900
38	1436B	Prime Square	900
39	1462C	Unique Number	900
40	1475A	Odd Divisor	900
41	1475B	New Year's Number	900
42	1496A	Split it!	900
43	1535B	Array Reodering	900
44	1612B	Special Permutation	900
45	1613A	Long Comparison	900
46	1617B	GCD Problem	900
47	1714A	Everyone Loves to Sleep	900
48	1758B	XOR = Average	900
49	1927B	Following the String	900
50	1985D	Manhattan Circle	900
51	2033B	Sakurako and Water	900
52	2035B	Everyone Loves Tres	900
53	2094C	Brr Brrr Patapim	900
54	2132B	The Secret Number	900

Rating 1000

#	ID	Problem	Rating
1	1A	Theatre Square	1000
2	3A	Shortest path of the king	1000
3	13A	Numbers	1000
4	29A	Spit Problem	1000
5	35A	Shell Game	1000
6	37A	Towers	1000
7	43A	Football	1000
8	58A	Chat room	1000
9	69A	Young Physicist	1000
10	72G	Fibonacci army	1000
11	102B	Sum of Digits	1000
12	108A	Palindromic Times	1000
13	109A	Lucky Sum of Digits	1000
14	118A	String Task	1000
15	118B	Present from Lena	1000
16	120A	Elevator	1000
17	124A	The number of positions	1000
18	131A	cAPS lOCK	1000
19	219A	k-String	1000
20	299A	Ksusha and Array	1000
21	322A	Ciel and Dancing	1000
22	334A	Candy Bags	1000
23	352A	Jeff and Digits	1000
24	379A	New Year Candles	1000
25	420A	Start Up	1000
26	452A	Eevee	1000
27	462A	Appleman and Easy Task	1000
28	476A	Dreamoon and Stairs	1000
29	507A	Amr and Music	1000
30	535A	Tavas and Nafas	1000
31	560A	Currency System in Geraldion	1000
32	577A	Multiplication Table	1000
33	584A	Olesya and Rodion	1000
34	622A	Infinite Sequence	1000
35	691A	Fashion in Berland	1000
36	753A	Santa Claus and Candies	1000
37	798A	Mike and palindrome	1000
38	859B	Lazy Security Guard	1000
39	887A	Div. 64	1000
40	1008B	Turn the Rectangles	1000
41	1051B	Relatively Prime Pairs	1000
42	1088B	Ehab and subtraction	1000
43	1090M	The Pleasant Walk	1000
44	1101A	Minimum Integer	1000
45	1107B	Digital root	1000
46	1133A	Middle of the Contest	1000
47	1165B	Polycarp Training	1000
48	1174A	Ehab Fails to Be Thanos	1000
49	1177A	Digits Sequence (Easy Edition)	1000
50	1182A	Filling Shapes	1000
51	1199B	Water Lily	1000
52	1211A	Three Problems	1000
53	1230B	Ania and Minimizing	1000
54	1256A	Payment Without Change	1000
55	1257B	Magic Stick	1000
56	1312B	Bogosort	1000
57	1346A	Color Revolution	1000
58	1405B	Array Cancellation	1000
59	1411B	Fair Numbers	1000
60	1418A	Buying Torches	1000
61	1476A	K-divisible Sum	1000
62	1485A	Add and Divide	1000
63	1520C	Not Adjacent Matrix	1000
64	1569B	Chess Tournament	1000
65	1695B	Circle Game	1000
66	1772C	Different Differences	1000
67	1931C	Make Equal Again	1000
68	1968C	Assembly via Remainders	1000
69	2145B	Deck of Cards	1000
70	2164B	Even Modulo Pair	1000
71	2203B	Beautiful Numbers	1000

Rating 1100

#	ID	Problem	Rating
1	6B	President's Office	1100
2	12B	Correct Solution?	1100
3	12C	Fruits	1100
4	25B	Phone numbers	1100
5	39D	Cubical Planet	1100
6	43B	Letter	1100
7	53A	Autocomplete	1100
8	82A	Double Cola	1100
9	100A	Carpeting the Room	1100
10	162A	Pentagonal numbers	1100
11	186A	Comparing Strings	1100
12	188A	Hexagonal Numbers	1100
13	188D	Asterisks	1100
14	224A	Parallelepiped	1100
15	270A	Fancy Fence	1100
16	296A	Yaroslav and Permutations	1100
17	300A	Array	1100
18	312A	Whose sentence is it?	1100
19	349A	Cinema Line	1100
20	362B	Petya and Staircases	1100
21	365A	Good Number	1100
22	382A	Ksenia and Pan Scales	1100
23	433A	Kitahara Haruki's Gift	1100
24	456A	Laptops	1100
25	475A	Bayan Bus	1100
26	501B	Misha and Changing Handles	1100
27	534A	Exam	1100
28	596A	Wilbur and Swimming Pool	1100
29	630C	Lucky Numbers	1100
30	630J	Divisibility	1100
31	755B	PolandBall and Game	1100
32	797A	k-Factorization	1100
33	825A	Binary Protocol	1100
34	835B	The number on the board	1100
35	841B	Godsend	1100
36	858A	k-rounding	1100
37	877A	Alex and broken contest	1100
38	911A	Nearest Minimums	1100
39	919B	Perfect Number	1100
40	1001A	Generate plus state or minus state	1100
41	1060B	Maximum Sum of Digits	1100
42	1115G1	AND oracle	1100
43	1117A	Best Subsegment	1100
44	1213B	Bad Prices	1100
45	1288B	Yet Another Meme Problem	1100
46	1327A	Sum of Odd Integers	1100
47	1366A	Shovels and Swords	1100
48	1478B	Nezzar and Lucky Number	1100
49	1490C	Sum of Cubes	1100
50	1511B	GCD Length	1100
51	1593D1	All are Same	1100
52	1594B	Special Numbers	1100
53	1618C	Paint the Array	1100
54	1638B	Odd Swap Sort	1100
55	1656B	Subtract Operation	1100
56	1672C	Unequal Array	1100
57	1700B	Palindromic Numbers	1100
58	1708B	Difference of GCDs	1100
59	1712C	Sort Zero	1100
60	1739B	Array Recovery	1100
61	1783B	Matrix of Differences	1100
62	1821B	Sort the Subarray	1100
63	1827A	Counting Orders	1100
64	1829E	The Lakes	1100
65	1840B	Binary Cafe	1100
66	1899C	Yarik and Array	1100
67	1950D	Product of Binary Decimals	1100
68	1976B	Increase/Decrease/Copy	1100
69	1977B	Binary Colouring	1100
70	1984B	Large Addition	1100
71	1999D	Slavic's Exam	1100
72	2025B	Binomial Coefficients, Kind Of	1100
73	2036C	Anya and 1100	1100
74	2043B	Digits	1100
75	2050B	Transfusion	1100
76	2060D	Subtract Min Sort	1100
77	2084B	MIN = GCD	1100
78	2137C	Maximum Even Sum	1100
79	2179C	Blackslex and Number Theory	1100

Rating 1200

#	ID	Problem	Rating
1	5B	Center Alignment	1200
2	6C	Alice, Bob and Chocolate	1200
3	9C	Hexadecimal's Numbers	1200
4	18C	Stripe	1200
5	23A	You're Given a String...	1200
6	27A	Next Test	1200
7	31A	Worms Evolution	1200
8	38B	Chess	1200
9	47B	Coins	1200
10	53C	Little Frog	1200
11	55A	Flea travel	1200
12	59B	Fortune Telling	1200
13	78B	Easter Eggs	1200
14	134A	Average Numbers	1200
15	217A	Ice Skating	1200
16	239A	Two Bags of Potatoes	1200
17	254A	Cards with Numbers	1200
18	454B	Little Pony and Sort by Shift	1200
19	459A	Pashmak and Garden	1200
20	466A	Cheap Travel	1200
21	489A	SwapSort	1200
22	489B	BerSU Ball	1200
23	514A	Chewbaсca and Number	1200
24	523A	Rotate, Flip and Zoom	1200
25	552B	Vanya and Books	1200
26	554B	Ohana Cleans Up	1200
27	630B	Moore's Law	1200
28	630R	Game	1200
29	660A	Co-prime Array	1200
30	683A	The Check of the Point	1200
31	749B	Parallelogram is Back	1200
32	754A	Lesha and array splitting	1200
33	765C	Table Tennis Game 2	1200
34	802M	April Fools' Problem (easy)	1200
35	802M1	April Fools' Problem (easy)	1200
36	803B	Distances to Zero	1200
37	842A	Kirill And The Game	1200
38	892B	Wrath	1200
39	977C	Less or Equal	1200
40	982A	Row	1200
41	999C	Alphabetic Removals	1200
42	1001H	Oracle for f(x) = parity of the number of 1s in x	1200
43	1028B	Unnatural Conditions	1200
44	1068B	LCM	1200
45	1076B	Divisor Subtraction	1200
46	1104B	Game with string	1200
47	1143B	Nirvana	1200
48	1174B	Ehab Is an Odd Person	1200
49	1203B	Equal Rectangles	1200
50	1213C	Book Reading	1200
51	1315C	Restoring Permutation	1200
52	1352B	Same Parity Summands	1200
53	1352C	K-th Not Divisible by n	1200
54	1363A	Odd Selection	1200
55	1364A	XXXXX	1200
56	1406B	Maximum Product	1200
57	1433D	Districts Connection	1200
58	1497C1	k-LCM (easy version)	1200
59	1512D	Corrupted Array	1200
60	1514B	AND 0, Sum Big	1200
61	1520D	Same Differences	1200
62	1541B	Pleasant Pairs	1200
63	1581B	Diameter of Graph	1200
64	1608B	Build the Permutation	1200
65	1635C	Differential Sorting	1200
66	1656C	Make Equal With Mod	1200
67	1669G	Fall Down	1200
68	1681C	Double Sort	1200
69	1736B	Playing with GCD	1200
70	1822D	Super-Permutation	1200
71	1826A	Trust Nobody	1200
72	1832C	Contrast Value	1200
73	1903B	StORage room	1200
74	1926C	Vlad and a Sum of Sum of Digits	1200
75	1954C	Long Multiplication	1200
76	1987C	Basil's Garden	1200
77	2002C	Black Circles	1200
78	2050C	Uninteresting Number	1200
79	2094E	Boneca Ambalabu	1200
80	2137D	Replace with Occurrences	1200
81	2181H	Honey Cake	1200

Rating 1300

#	ID	Problem	Rating
1	25A	IQ test	1300
2	36A	Extra-terrestrial Intelligence	1300
3	39H	Multiplication Table	1300
4	40A	Find Color	1300
5	57A	Square Earth?	1300
6	58B	Coins	1300
7	64A	Factorial	1300
8	94B	Friends	1300
9	135A	Replacement	1300
10	147A	Punctuation	1300
11	181B	Number of Triplets	1300
12	188B	A + Reverse B	1300
13	189A	Cut Ribbon	1300
14	203B	Game on Paper	1300
15	221B	Little Elephant and Numbers	1300
16	230B	T-primes	1300
17	251A	Points on Line	1300
18	276B	Little Girl and Game	1300
19	312B	Archer	1300
20	485B	Valuable Resources	1300
21	493A	Vasya and Football	1300
22	573A	Bear and Poker	1300
23	600B	Queries about less or equal elements	1300
24	630F	Selection of Personnel	1300
25	630N	Forecast	1300
26	661A	Lazy Caterer Sequence	1300
27	665C	Simple Strings	1300
28	770B	Maximize Sum of Digits	1300
29	844B	Rectangles	1300
30	876B	Divisiblity of Differences	1300
31	887B	Cubes for Masha	1300
32	965B	Battleship	1300
33	1001F	Distinguish multi-qubit basis states	1300
34	1016B	Segment Occurrences	1300
35	1029A	Many Equal Substrings	1300
36	1030C	Vasya and Golden Ticket	1300
37	1076C	Meme Problem	1300
38	1157B	Long Number	1300
39	1165C	Good String	1300
40	1174C	Ehab and a Special Coloring Problem	1300
41	1203C	Common Divisors	1300
42	1220B	Multiplication Table	1300
43	1260B	Obtain Two Zeroes	1300
44	1294C	Product of Three Numbers	1300
45	1373C	Pluses and Minuses	1300
46	1422B	Nice Matrix	1300
47	1424G	Years	1300
48	1454D	Number into Sequence	1300
49	1667A	Make it Increasing	1300
50	1703F	Yet Another Problem About Pairs Satisfying an Inequality	1300
51	1788C	Matching Numbers	1300
52	1913C	Game with Multiset	1300
53	1927D	Find the Different Ones!	1300
54	1988C	Increasing Sequence with Fixed OR	1300
55	1999E	Triple Operations	1300
56	2033D	Kousuke's Assignment	1300
57	2044E	Insane Problem	1300
58	2050D	Digital string maximization	1300
59	2169C	Range Operation	1300

Rating 1400

#	ID	Problem	Rating
1	24A	Ring road	1400
2	26B	Regular Bracket Sequence	1400
3	41B	Martian Dollar	1400
4	44E	Anfisa the Monkey	1400
5	45I	TCMCF+++	1400
6	100C	A+B	1400
7	111A	Petya and Inequiations	1400
8	124B	Permutations	1400
9	125A	Measuring Lengths in Baden	1400
10	130B	Gnikool Ssalg	1400
11	131C	The World is a Theatre	1400
12	180C	Letter	1400
13	188C	LCM	1400
14	188F	Binary Notation	1400
15	219B	Special Offer! Super Price 999 Bourles!	1400
16	245E	Mishap in Club	1400
17	248B	Chilly Willy	1400
18	260A	Adding Digits	1400
19	289B	Polo the Penguin and Matrix	1400
20	315A	Sereja and Bottles	1400
21	379C	New Year Ratings Change	1400
22	435B	Pasha Maximizes	1400
23	470A	Crystal Ball Sequence	1400
24	489C	Given Length and Sum of Digits...	1400
25	513B1	Permutations	1400
26	520B	Two Buttons	1400
27	538B	Quasi Binary	1400
28	544B	Sea and Islands	1400
29	630H	Benches	1400
30	683D	Chocolate Bar	1400
31	699B	One Bomb	1400
32	710B	Optimal Point on a Line	1400
33	762A	k-th divisor	1400
34	797B	Odd sum	1400
35	803A	Maximal Binary Matrix	1400
36	888C	K-Dominant Character	1400
37	1001D	Distinguish plus state and minus state	1400
38	1001G	Oracle for f(x) = k-th element of x	1400
39	1046C	Space Formula	1400
40	1057B	DDoS	1400
41	1095C	Powers Of Two	1400
42	1131B	Draw!	1400
43	1167C	News Distribution	1400
44	1215B	The Number of Products	1400
45	1285C	Fadi and LCM	1400
46	1324D	Pair of Topics	1400
47	1351C	Skier	1400
48	1354C1	Simple Polygon Embedding	1400
49	1355D	Game With Array	1400
50	1380C	Create The Teams	1400
51	1463B	Find The Array	1400
52	1494B	Berland Crossword	1400
53	1506D	Epic Transformation	1400
54	1526B	I Hate 1111	1400
55	1579D	Productive Meeting	1400
56	1606C	Banknotes	1400
57	1697C	awoo's Favorite Problem	1400
58	1749C	Number Game	1400
59	1772D	Absolute Sorting	1400
60	1790E	Vlad and a Pair of Numbers	1400
61	1838C	No Prime Differences	1400
62	1895C	Torn Lucky Ticket	1400
63	1918C	XOR-distance	1400
64	1923C	Find B	1400
65	1965A	Everything Nim	1400
66	1967B1	Reverse Card (Easy Version)	1400
67	1989C	Two Movies	1400
68	2009D	Satyam and Counting	1400
69	2009E	Klee's SUPER DUPER LARGE Array!!!	1400
70	2020C	Bitwise Balancing	1400
71	2038C	DIY	1400

Rating 1500

#	ID	Problem	Rating
1	18A	Triangle	1500
2	22B	Bargaining Table	1500
3	31B	Sysadmin Bob	1500
4	39J	Spelling Check	1500
5	50B	Choosing Symbol Pairs	1500
6	64B	Expression	1500
7	100B	Friendly Numbers	1500
8	100I	Rotation	1500
9	114B	PFAST Inc.	1500
10	130C	Decimal sum	1500
11	130D	Exponentiation	1500
12	274A	k-Multiple Free Set	1500
13	276C	Little Girl and Maximum Sum	1500
14	325A	Square and Rectangles	1500
15	328B	Sheldon and Ice Pieces	1500
16	425A	Sereja and Swaps	1500
17	468A	24 Game	1500
18	530A	Quadratic equation	1500
19	530C	Diophantine equation	1500
20	550A	Two Substrings	1500
21	550C	Divisibility by Eight	1500
22	630K	Indivisibility	1500
23	670D2	Magic Powder - 2	1500
24	710C	Magic Odd Square	1500
25	742B	Arpa’s obvious problem and Mehrdad’s terrible solution	1500
26	746D	Green and Black Tea	1500
27	748B	Santa Claus and Keyboard Check	1500
28	845C	Two TVs	1500
29	868C	Qualification Rounds	1500
30	982C	Cut 'em all!	1500
31	991D	Bishwock	1500
32	1051C	Vasya and Multisets	1500
33	1101C	Division and Union	1500
34	1105C	Ayoub and Lost Array	1500
35	1133D	Zero Quantity Maximization	1500
36	1141C	Polycarp Restores Permutation	1500
37	1169B	Pairs	1500
38	1201B	Zero Array	1500
39	1213D1	Equalizing by Division (easy version)	1500
40	1272D	Remove One Element	1500
41	1325C	Ehab and Path-etic MEXs	1500
42	1409D	Decrease the Sum of Digits	1500
43	1416A	k-Amazing Numbers	1500
44	1490F	Equalize the Array	1500
45	1516B	AGAGA XOOORRR	1500
46	1616C	Representative Edges	1500
47	1722G	Even-Odd XOR	1500
48	1742G	Orray	1500
49	1744E1	Divisible Numbers (easy version)	1500
50	1765N	Number Reduction	1500
51	1774B	Coloring	1500
52	1809C	Sum on Subarrays	1500
53	1811E	Living Sequence	1500
54	1915F	Greetings	1500
55	1996D	Fun	1500
56	2072E	Do You Love Your Hero and His Two-Hit Multi-Target Attacks?	1500
57	2093E	Min Max MEX	1500

Rating 1600

#	ID	Problem	Rating
1	1B	Spreadsheet	1600
2	11B	Jumping Jack	1600
3	23B	Party	1600
4	28A	Bender Problem	1600
5	40B	Repaintings	1600
6	52B	Right Triangles	1600
7	55B	Smallest number	1600
8	64C	Table	1600
9	125C	Hobbits' Party	1600
10	130E	Tribonacci numbers	1600
11	130H	Balanced brackets	1600
12	153A	A + B	1600
13	188G	Array Sorting	1600
14	214B	Hometask	1600
15	219C	Color Stripe	1600
16	232A	Cycles	1600
17	235A	LCM Challenge	1600
18	305A	Strange Addition	1600
19	322B	Ciel and Flowers	1600
20	323A	Black-and-White Cube	1600
21	348A	Mafia	1600
22	372A	Counting Kangaroos is Fun	1600
23	373B	Making Sequences is Fun	1600
24	375A	Divisible by Seven	1600
25	377A	Maze	1600
26	407A	Triangle	1600
27	440B	Balancer	1600
28	493C	Vasya and Basketball	1600
29	530D	Set subtraction	1600
30	597A	Divisibility	1600
31	597B	Restaurant	1600
32	605A	Sorting Railway Cars	1600
33	616D	Longest k-Good Segment	1600
34	660C	Hard Process	1600
35	678B	The Same Calendar	1600
36	683B	The Teacher of Physical Education	1600
37	683C	Symmetric Difference	1600
38	691B	s-palindrome	1600
39	825B	Five-In-a-Row	1600
40	845B	Luba And The Ticket	1600
41	888D	Almost Identity Permutations	1600
42	958E1	Guard Duty (easy)	1600
43	980B	Marlin	1600
44	1003D	Coins and Queries	1600
45	1015D	Walking Between Houses	1600
46	1098A	Sum in the tree	1600
47	1115G2	OR oracle	1600
48	1140C	Playlist	1600
49	1165D	Almost All Divisors	1600
50	1165E	Two Arrays and Sum of Functions	1600
51	1175C	Electrification	1600
52	1184C1	Heidi and the Turing Test (Easy)	1600
53	1213D2	Equalizing by Division (hard version)	1600
54	1234D	Distinct Characters Queries	1600
55	1288C	Two Arrays	1600
56	1295C	Obtain The String	1600
57	1334C	Circle of Monsters	1600
58	1342C	Yet Another Counting Problem	1600
59	1352G	Special Permutation	1600
60	1363C	Game On Leaves	1600
61	1364C	Ehab and Prefix MEXs	1600
62	1373D	Maximum Sum on Even Positions	1600
63	1395C	Boboniu and Bit Operations	1600
64	1396A	Multiples of Length	1600
65	1398C	Good Subarrays	1600
66	1423K	Lonely Numbers	1600
67	1458A	Row GCD	1600
68	1482C	Basic Diplomacy	1600
69	1497C2	k-LCM (hard version)	1600
70	1511D	Min Cost String	1600
71	1513C	Add One	1600
72	1514C	Product 1 Modulo N	1600
73	1519D	Maximum Sum of Products	1600
74	1603B	Moderate Modular Mode	1600
75	1610C	Keshi Is Throwing a Party	1600
76	1612D	X-Magic Pair	1600
77	1633D	Make Them Equal	1600
78	1753B	Factorial Divisibility	1600
79	1771C	Hossam and Trainees	1600
80	1774D	Same Count One	1600
81	1787C	Remove the Bracket	1600
82	1833E	Round Dance	1600
83	1971F	Circle Perimeter	1600
84	1985G	D-Function	1600
85	1996E	Decode	1600
86	2004D	Colored Portals	1600
87	2046B	Move Back at a Cost	1600
88	2085C	Serval and The Formula	1600
89	2094F	Trulimero Trulicina	1600
90	2132D	From 1 to Infinity	1600
91	2199C	Minesweeper	1600

Rating 1700

#	ID	Problem	Rating
1	14C	Four Segments	1700
2	18B	Platforms	1700
3	20A	BerOS file system	1700
4	22C	System Administrator	1700
5	31C	Schedule	1700
6	53B	Blog Photo	1700
7	76E	Points	1700
8	130G	CAPS LOCK ON	1700
9	140A	New Year Table	1700
10	216B	Forming Teams	1700
11	275B	Convex Shape	1700
12	349B	Color the Fence	1700
13	439C	Devu and Partitioning of the Array	1700
14	466C	Number of Ways	1700
15	490C	Hacking Cypher	1700
16	530E	Sum and product	1700
17	578A	A Problem about Polyline	1700
18	581D	Three Logos	1700
19	598D	Igor In the Museum	1700
20	622C	Not Equal on a Segment	1700
21	627A	XOR Equation	1700
22	632C	The Smallest String Concatenation	1700
23	678D	Iterated Linear Function	1700
24	900C	Remove Extra One	1700
25	915C	Permute Digits	1700
26	919D	Substring	1700
27	926I	A Vital Problem	1700
28	983A	Finite or not?	1700
29	1102E	Monotonic Renumeration	1700
30	1132C	Painting the Fence	1700
31	1141E	Superhero Battle	1700
32	1144F	Graph Without Long Directed Paths	1700
33	1157E	Minimum Array	1700
34	1217C	The Number Of Good Substrings	1700
35	1219C	Periodic integer number	1700
36	1268A	Long Beautiful Integer	1700
37	1312D	Count the Arrays	1700
38	1325D	Ehab the Xorcist	1700
39	1329B	Dreamoon Likes Sequences	1700
40	1343D	Constant Palindrome Sum	1700
41	1468F	Full Turn	1700
42	1485C	Floor and Mod	1700
43	1497E1	Square-free division (easy version)	1700
44	1512G	Short Task	1700
45	1551D1	Domino (easy version)	1700
46	1554B	Cobb	1700
47	1644D	Cross Coloring	1700
48	1681D	Required Length	1700
49	1695C	Zero Path	1700
50	1722F	L-shapes	1700
51	1792D	Fixed Prefix Permutations	1700
52	1829H	Don't Blame Me	1700
53	1879D	Sum of XOR Functions	1700
54	1881F	Minimum Maximum Distance	1700
55	1883E	Look Back	1700
56	1931F	Chat Screenshots	1700
57	1948D	Tandem Repeats?	1700
58	1970C2	Game on Tree (Medium)	1700
59	1971G	XOUR	1700
60	2041D	Drunken Maze	1700
61	2050F	Maximum modulo equality	1700
62	2089A	Simple Permutation	1700
63	2132E	Arithmetics Competition	1700

Rating 1800

#	ID	Problem	Rating
1	7C	Line	1800
2	16C	Monitor	1800
3	33B	String Problem	1800
4	45J	Planting Trees	1800
5	49D	Game	1800
6	64D	Presents	1800
7	64E	Prime Segment	1800
8	67A	Partial Teacher	1800
9	69E	Subsegments	1800
10	100G	Name the album	1800
11	130J	Date calculation	1800
12	153B	Binary notation	1800
13	161D	Distance in Tree	1800
14	162B	Binary notation	1800
15	162F	Factorial zeros	1800
16	162H	Alternating case	1800
17	162J	Brackets	1800
18	301A	Yaroslav and Sequence	1800
19	404C	Restore Graph	1800
20	440C	One-Based Arithmetic	1800
21	452B	4-point polyline	1800
22	470B	Hexakosioihexekontahexaphobia	1800
23	513B2	Permutations	1800
24	612D	The Union of k-Segments	1800
25	652D	Nested Segments	1800
26	663A	Rebus	1800
27	683E	Hammer throwing	1800
28	691C	Exponential notation	1800
29	802A1	Heidi and Library (easy)	1800
30	802A2	Heidi and Library (medium)	1800
31	802B	Heidi and Library (medium)	1800
32	846F	Random Query	1800
33	883H	Palindromic Cut	1800
34	926B	Add Points	1800
35	1030D	Vasya and Triangle	1800
36	1042D	Petya and Array	1800
37	1076D	Edge Deletion	1800
38	1152C	Neko does Maths	1800
39	1177B	Digits Sequence (Hard Edition)	1800
40	1208C	Magic Grid	1800
41	1213G	Path Queries	1800
42	1225D	Power Products	1800
43	1249D1	Too Many Segments (easy version)	1800
44	1249D2	Too Many Segments (hard version)	1800
45	1267L	Lexicography	1800
46	1286B	Numbers on Tree	1800
47	1295D	Same GCDs	1800
48	1327E	Count The Blocks	1800
49	1329A	Dreamoon Likes Coloring	1800
50	1442A	Extreme Subtraction	1800
51	1462F	The Treasure of The Segments	1800
52	1466E	Apollo versus Pan	1800
53	1491D	Zookeeper and The Infinite Zoo	1800
54	1666C	Connect the Points	1800
55	1666L	Labyrinth	1800
56	1691D	Max GEQ Sum	1800
57	1721D	Maximum AND	1800
58	1758D	Range = √Sum	1800
59	1781D	Many Perfect Squares	1800
60	1922E	Increasing Subsequences	1800
61	1935D	Exam in MAC	1800
62	1970E1	Trails (Easy)	1800
63	2008G	Sakurako's Task	1800
64	2033F	Kosuke's Sloth	1800
65	2043D	Problem about GCD	1800
66	2148F	Gravity Falls	1800
67	2184E	Exquisite Array	1800
68	2187B	Shortest Statement Ever	1800
69	2206H	Reflect Sort	1800

Rating 1900

#	ID	Problem	Rating
1	5C	Longest Regular Bracket Sequence	1900
2	14D	Two Paths	1900
3	16E	Fish	1900
4	19B	Checkout Assistant	1900
5	20C	Dijkstra?	1900
6	22D	Segments	1900
7	25C	Roads in Berland	1900
8	25D	Roads not only in Berland	1900
9	27C	Unordered Subsequence	1900
10	37C	Old Berland Language	1900
11	41D	Pawn	1900
12	41E	3-cycles	1900
13	45C	Dancing Lessons	1900
14	45D	Event Dates	1900
15	55C	Pie or die	1900
16	57C	Array	1900
17	134B	Pairs of Numbers	1900
18	138B	Digits Permutations	1900
19	162D	Remove digits	1900
20	294C	Shaass and Lights	1900
21	319B	Psychos in a Line	1900
22	335B	Palindrome	1900
23	388B	Fox and Minimal path	1900
24	455B	A Lot of Games	1900
25	463C	Gargari and Bishops	1900
26	463D	Gargari and Permutations	1900
27	470C	Eval	1900
28	470D	Caesar Cipher	1900
29	470E	Chessboard	1900
30	540D	Bad Luck Island	1900
31	550D	Regular Bridge	1900
32	552D	Vanya and Triangles	1900
33	597C	Subsequences	1900
34	648D	Собачки и миски	1900
35	660D	Number of Parallelograms	1900
36	661B	Seasons	1900
37	661F	Primes in Interval	1900
38	683G	The Fraction	1900
39	746E	Numbers Exchange	1900
40	803C	Maximal GCD	1900
41	846D	Monitor	1900
42	883G	Orientation of Edges	1900
43	999D	Equalize the Remainders	1900
44	1036C	Classy Numbers	1900
45	1041E	Tree Reconstruction	1900
46	1067A	Array Without Local Maximums	1900
47	1089F	Fractions	1900
48	1168B	Good Triple	1900
49	1174D	Ehab and the Expected XOR Problem	1900
50	1175D	Array Splitting	1900
51	1205B	Shortest Cycle	1900
52	1272E	Nearest Opposite Parity	1900
53	1276B	Two Fairs	1900
54	1285D	Dr. Evil Underscores	1900
55	1303D	Fill The Bag	1900
56	1311F	Moving Points	1900
57	1360G	A/B Matrix	1900
58	1400D	Zigzags	1900
59	1423B	Valuable Paper	1900
60	1488C	Two Policemen	1900
61	1492D	Genius's Gambit	1900
62	1560F1	Nearest Beautiful Number (easy version)	1900
63	1593D2	Half of Same	1900
64	1600E	Array Game	1900
65	1651D	Nearest Excluded Points	1900
66	1656D	K-good	1900
67	1701D	Permutation Restoration	1900
68	1714F	Build a Tree and That Is It	1900
69	1739D	Reset K Edges	1900
70	1744E2	Divisible Numbers (hard version)	1900
71	1773A	Amazing Trick	1900
72	1895D	XOR Construction	1900
73	1902E	Collapsing Strings	1900
74	1921F	Sum of Progression	1900
75	1927F	Microcycle	1900
76	1958E	Yet Another Permutation Constructive	1900
77	1970C3	Game on Tree (Hard)	1900
78	1996F	Bomb	1900
79	2000F	Color Rows and Columns	1900
80	2013D	Minimize the Difference	1900
81	2026D	Sums of Segments	1900
82	2050G	Tree Destruction	1900
83	2094H	La Vaca Saturno Saturnita	1900
84	2117G	Omg Graph	1900
85	2184G	Nastiness of Segments	1900

Rating 2000

#	ID	Problem	Rating
1	2B	The least round way	2000
2	18E	Flag 2	2000
3	20B	Equation	2000
4	21B	Intersection	2000
5	21C	Stripe 2	2000
6	26C	Parquet	2000
7	27E	Number With The Given Amount Of Divisors	2000
8	29D	Ant on the Tree	2000
9	47C	Crossword	2000
10	64F	Domain	2000
11	101C	Vectors	2000
12	117C	Cycle	2000
13	118E	Bertown roads	2000
14	128D	Numbers	2000
15	153D	Date Change	2000
16	162G	Non-decimal sum	2000
17	162I	Truncatable primes	2000
18	267B	Dominoes	2000
19	345C	Counting Fridays	2000
20	388C	Fox and Card Game	2000
21	461B	Appleman and Tree	2000
22	466B	Wonder Room	2000
23	490E	Restoring Increasing Sequence	2000
24	514C	Watto and Mechanism	2000
25	600D	Area of Two Circles' Intersection	2000
26	661C	Array Sum	2000
27	661E	Divisibility Check	2000
28	710E	Generate a String	2000
29	961D	Pair Of Lines	2000
30	963B	Destruction of a Tree	2000
31	1082E	Increasing Frequency	2000
32	1092E	Minimal Diameter Forest	2000
33	1101D	GCD Counting	2000
34	1132F	Clear the String	2000
35	1156C	Match Points	2000
36	1200E	Compress Words	2000
37	1209E1	Rotate Columns (easy version)	2000
38	1211D	Teams	2000
39	1244E	Minimizing Difference	2000
40	1288D	Minimax Problem	2000
41	1311D	Three Integers	2000
42	1354C2	Not So Simple Polygon Embedding	2000
43	1366D	Two Divisors	2000
44	1416B	Make Them Equal	2000
45	1830B	The BOSS Can Count Pairs	2000
46	1851G	Vlad and the Mountains	2000
47	1923E	Count Paths	2000
48	1970E2	Trails (Medium)	2000
49	1974G	Money Buys Less Happiness Now	2000
50	2041C	Cube	2000
51	2051F	Joker	2000
52	2075D	Equalization	2000
53	2114F	Small Operations	2000
54	2131G	Wafu!	2000
55	2172I	Birthday	2000
56	2199F	Self-Produced Sequences	2000

Rating 2100

#	ID	Problem	Rating
1	1C	Ancient Berland Circus	2100
2	12E	Start of the session	2100
3	45H	Road Problem	2100
4	100H	Battleship	2100
5	153E	Euclidean Distance	2100
6	226D	The table	2100
7	260D	Black and White Tree	2100
8	340B	Maximal Area Quadrilateral	2100
9	348B	Apple Tree	2100
10	431D	Random Task	2100
11	457C	Elections	2100
12	475C	Kamal-ol-molk's Painting	2100
13	484B	Maximum Value	2100
14	491B	New York Hotel	2100
15	530G	Levenshtein distance	2100
16	530H	Points in triangle	2100
17	546E	Soldier and Traveling	2100
18	609E	Minimum spanning tree for each edge	2100
19	615E	Hexagons	2100
20	620E	New Year Tree	2100
21	630P	Area of a Star	2100
22	632D	Longest Subsequence	2100
23	661D	Maximal Difference	2100
24	837E	Vasya's Function	2100
25	919E	Congruence Equation	2100
26	955C	Sad powers	2100
27	980D	Perfect Groups	2100
28	1003E	Tree Constructing	2100
29	1098B	Nice table	2100
30	1167E	Range Deleting	2100
31	1184A2	Heidi Learns Hashing (Medium)	2100
32	1207F	Remainder Problem	2100
33	1213F	Unstable String Sort	2100
34	1217D	Coloring Edges	2100
35	1355E	Restorer Distance	2100
36	1387A	Graph	2100
37	1431G	Number Deletion Game	2100
38	1454F	Array Partition	2100
39	1486D	Max Median	2100
40	1493D	GCD of an Array	2100
41	1499D	The Number of Pairs	2100
42	1551D2	Domino (hard version)	2100
43	1555E	Boring Segments	2100
44	1560F2	Nearest Beautiful Number (hard version)	2100
45	1575L	Longest Array Deconstruction	2100
46	1606E	Arena	2100
47	1667B	Optimal Partition	2100
48	1748D	ConstructOR	2100
49	1811F	Is It Flower?	2100
50	1884D	Counting Rhyme	2100
51	1910E	Maximum Sum Subarrays	2100
52	1913D	Array Collapse	2100
53	2004E	Not a Nim Problem	2100
54	2008H	Sakurako's Test	2100
55	2038B	Make It Equal	2100
56	2199E	Supersequence	2100

Rating 2200

#	ID	Problem	Rating
1	11D	A Simple Task	2200
2	13C	Sequence	2200
3	19C	Deletion of Repeats	2200
4	25E	Test	2200
5	28C	Bath Queue	2200
6	36C	Bowls	2200
7	42C	Safe cracking	2200
8	47D	Safe	2200
9	52C	Circular RMQ	2200
10	153C	Caesar Cipher	2200
11	272E	Dima and Horses	2200
12	274D	Lovely Matrix	2200
13	323B	Tournament-graph	2200
14	575G	Run for beer	2200
15	622E	Ants in Leaves	2200
16	661G	Hungarian Notation	2200
17	662B	Graph Coloring	2200
18	678E	Another Sith Tournament	2200
19	690C3	Brain Network (hard)	2200
20	723E	One-Way Reform	2200
21	802D2	Marmots (medium)	2200
22	802E	Marmots (medium)	2200
23	946E	Largest Beautiful Number	2200
24	1034B	Little C Loves 3 II	2200
25	1070A	Find a Number	2200
26	1140E	Palindrome-less Arrays	2200
27	1154G	Minimum Possible LCM	2200
28	1156D	0-1-Tree	2200
29	1156E	Special Segments of Permutation	2200
30	1157G	Inverse of Rows and Columns	2200
31	1168C	And Reachability	2200
32	1196F	K-th Path	2200
33	1220E	Tourism	2200
34	1249F	Maximum Weight Subset	2200
35	1278E	Tests for problem D	2200
36	1373E	Sum of Digits	2200
37	1389E	Calendar Ambiguity	2200
38	1400E	Clear the Multiset	2200
39	1424M	Ancient Language	2200
40	1437E	Make It Increasing	2200
41	1438D	Powerful Ksenia	2200
42	1468A	LaIS	2200
43	1503C	Travelling Salesman Problem	2200
44	1551F	Equidistant Vertices	2200
45	1575G	GCD Festival	2200
46	1616E	Lexicographically Small Enough	2200
47	1630C	Paint the Middle	2200
48	1656E	Equal Tree Sums	2200
49	1657E	Star MST	2200
50	1832E	Combinatorics Problem	2200
51	1841E	Fill the Matrix	2200
52	1907G	Lights	2200
53	1967B2	Reverse Card (Hard Version)	2200
54	1970E3	Trails (Hard)	2200
55	1997E	Level Up	2200
56	2013E	Prefix GCD	2200
57	2045H	Missing Separators	2200

Rating 2300

#	ID	Problem	Rating
1	24E	Berland collider	2300
2	36D	New Game with a Chess Piece	2300
3	40C	Berland Square	2300
4	42D	Strange town	2300
5	64H	Table Bowling	2300
6	97B	Superset	2300
7	111D	Petya and Coloring	2300
8	130I	Array sorting	2300
9	277B	Set of Points	2300
10	294E	Shaass the Great	2300
11	306D	Polygon	2300
12	364C	Beautiful Set	2300
13	425D	Sereja and Squares	2300
14	429C	Guess the Tree	2300
15	432E	Square Tiling	2300
16	470F	Pairwise Sums	2300
17	470G	Hamming Distance	2300
18	470H	Array Sorting	2300
19	487C	Prefix Product Sequence	2300
20	585D	Lizard Era: Beginning	2300
21	598C	Nearest vectors	2300
22	600E	Lomsat gelral	2300
23	641G	Little Artem and Graph	2300
24	660E	Different Subsets For All Tuples	2300
25	690A2	Collective Mindsets (medium)	2300
26	727E	Games on a CD	2300
27	762D	Maximum path	2300
28	838E	Convex Countour	2300
29	845G	Shortest Path Problem?	2300
30	888G	Xor-MST	2300
31	993E	Nikita and Order Statistics	2300
32	995C	Leaving the Bar	2300
33	1093G	Multidimensional Queries	2300
34	1132E	Knapsack	2300
35	1182E	Product Oriented Recurrence	2300
36	1188B	Count Pairs	2300
37	1198D	Rectangle Painting 1	2300
38	1211F	kotlinkotlinkotlinkotlin...	2300
39	1268C	K Integers	2300
40	1276C	Beautiful Rectangle	2300
41	1346G	Two IP Cameras	2300
42	1385G	Columns Swaps	2300
43	1468M	Similar Sets	2300
44	1488F	Dogecoin	2300
45	1553F	Pairwise Modulo	2300
46	1600F	Party Organization	2300
47	1681F	Unique Occurrences	2300
48	1743F	Intersection and Union	2300
49	1849E	Max to the Right of Min	2300
50	1861E	Non-Intersecting Subpermutations	2300
51	1928E	Modular Sequence	2300
52	1989E	Distance to Different	2300

Rating 2400

#	ID	Problem	Rating
1	5E	Bindian Signalizing	2400
2	21D	Traveling Graph	2400
3	24D	Broken robot	2400
4	64I	Sort the Table	2400
5	125E	MST Company	2400
6	266D	BerDonalds	2400
7	277E	Binary Tree on Plane	2400
8	303C	Minimum Modular	2400
9	342E	Xenia and Tree	2400
10	417E	Square Table	2400
11	441E	Valera and Number	2400
12	534F	Simplified Nonogram	2400
13	632E	Thief in a Shop	2400
14	661H	Rotate Matrix	2400
15	720B	Cactusophobia	2400
16	802J3	Send the Fool Further! (hard)	2400
17	856D	Masha and Cactus	2400
18	865D	Buy Low Sell High	2400
19	911F	Tree Destruction	2400
20	912E	Prime Gift	2400
21	915F	Imbalance Value of a Tree	2400
22	959F	Mahmoud and Ehab and yet another xor task	2400
23	962F	Simple Cycles Edges	2400
24	990G	GCD Counting	2400
25	1000F	One Occurrence	2400
26	1027F	Session in BSU	2400
27	1028E	Restore Array	2400
28	1036E	Covered Points	2400
29	1042F	Leaf Sets	2400
30	1051F	The Shortest Statement	2400
31	1059E	Split the Tree	2400
32	1070I	Privatization of Roads in Berland	2400
33	1083E	The Fair Nut and Rectangles	2400
34	1089K	King Kog's Reception	2400
35	1093F	Vasya and Array	2400
36	1114F	Please, another Queries on Array?	2400
37	1184E3	Daleks' Invasion (hard)	2400
38	1186F	Vus the Cossack and a Graph	2400
39	1187D	Subarray Sorting	2400
40	1202E	You Are Given Some Strings...	2400
41	1257F	Make Them Similar	2400
42	1374F	Cyclic Shifts Sorting	2400
43	1401E	Divide Square	2400
44	1423J	Bubble Cup hypothesis	2400
45	1436E	Complicated Computations	2400
46	1473E	Minimum Path	2400
47	1485F	Copy or Prefix Sum	2400
48	1585F	Non-equal Neighbours	2400
49	1594F	Ideal Farm	2400
50	1749E	Cactus Wall	2400
51	1777F	Comfortably Numb	2400
52	1795F	Blocking Chips	2400
53	1886E	I Wanna be the Team Leader	2400
54	1902F	Trees and XOR Queries Again	2400
55	1910H	Sum of Digits of Sums	2400
56	1913E	Matrix Problem	2400
57	1958G	Observation Towers	2400
58	1969E	Unique Array	2400

Rating 2500

#	ID	Problem	Rating
1	23C	Oranges and Apples	2500
2	23E	Tree	2500
3	55D	Beautiful numbers	2500
4	55E	Very simple problem	2500
5	333E	Summer Earnings	2500
6	401E	Olympic Games	2500
7	442C	Artem and Array	2500
8	449C	Jzzhu and Apples	2500
9	530I	Different variables	2500
10	678F	Lena and Queries	2500
11	710D	Two Arithmetic Progressions	2500
12	734F	Anton and School	2500
13	813F	Bipartite Checking	2500
14	840D	Destiny	2500
15	884E	Binary Matrix	2500
16	911G	Mass Change Queries	2500
17	946G	Almost Increasing Array	2500
18	963D	Frequency of String	2500
19	986C	AND Graph	2500
20	1043F	Make It One	2500
21	1117G	Recursive Queries	2500
22	1175F	The Number of Subpermutations	2500
23	1188C	Array Beauty	2500
24	1198E	Rectangle Painting 2	2500
25	1209E2	Rotate Columns (hard version)	2500
26	1327F	AND Segments	2500
27	1418G	Three Occurrences	2500
28	1427E	Xum	2500
29	1467E	Distinctive Roots in a Tree	2500
30	1468I	Plane Tiling	2500
31	1488G	Painting Numbers	2500
32	1513F	Swapping Problem	2500
33	1516E	Baby Ehab Plays with Permutations	2500
34	1521D	Nastia Plays with a Tree	2500
35	1539E	Game with Cards	2500
36	1661E	Narrow Components	2500
37	1701F	Points	2500
38	1716F	Bags with Balls	2500
39	1771F	Hossam and Range Minimum Query	2500
40	1842F	Tenzing and Tree	2500
41	1917F	Construct Tree	2500
42	1922F	Replace on Segment	2500
43	1948F	Rare Coins	2500
44	1983F	array-value	2500
45	2026E	Best Subsequence	2500
46	2075E	XOR Matrix	2500
47	2113F	Two Arrays	2500
48	2117H	Incessant Rain	2500
49	2165D	Path Split	2500

Rating 2600

#	ID	Problem	Rating
1	2C	Commentator problem	2600
2	13D	Triangles	2600
3	23D	Tetragon	2600
4	241E	Flights	2600
5	338E	Optimize!	2600
6	547D	Mike and Fish	2600
7	662C	Binary Table	2600
8	682E	Alyona and Triangles	2600
9	690E2	Photographs (II)	2600
10	802C	Heidi and Library (hard)	2600
11	925D	Aztec Catacombs	2600
12	1070L	Odd Federalization	2600
13	1120E	The very same Munchhausen	2600
14	1140F	Extending Set of Points	2600
15	1209F	Koala and Notebook	2600
16	1227G	Not Same	2600
17	1278F	Cards	2600
18	1325E	Ehab's REAL Number Theory Problem	2600
19	1348F	Phoenix and Memory	2600
20	1389F	Bicolored Segments	2600
21	1430G	Yet Another DAG Problem	2600
22	1493E	Enormous XOR	2600
23	1584F	Strange LCS	2600
24	1613F	Tree Coloring	2600
25	1656F	Parametric MST	2600
26	1657F	Words on Tree	2600
27	1661F	Teleporters	2600
28	1696F	Tree Recovery	2600
29	1736E	Swap and Take	2600
30	1773D	Dominoes	2600
31	1799G	Count Voting	2600
32	2042F	Two Subarrays	2600
33	2081D	MST in Modulo Graph	2600
34	2104F	Numbers and Strings	2600

Rating 2700

#	ID	Problem	Rating
1	70D	Professor's task	2700
2	107E	Darts	2700
3	293B	Distinct Paths	2700
4	293D	Ksusha and Square	2700
5	293E	Close Vertices	2700
6	827D	Best Edge Weight	2700
7	958E3	Guard Duty (hard)	2700
8	982F	The Meeting Place Cannot Be Changed	2700
9	995E	Number Clicker	2700
10	1019D	Large Triangle	2700
11	1182F	Maximum Sine	2700
12	1194G	Another Meme Problem	2700
13	1205D	Almost All	2700
14	1270G	Subset with Zero Sum	2700
15	1366G	Construct the String	2700
16	1555F	Good Graph	2700
17	1599G	Shortest path	2700
18	1599I	Desert	2700
19	1641D	Two Arrays	2700
20	1671F	Permutation Counting	2700
21	1728G	Illumination	2700
22	1814F	Communication Towers	2700
23	1849F	XOR Partition	2700
24	1867F	Most Different Tree	2700
25	1916H1	Matrix Rank (Easy Version)	2700
26	1916H2	Matrix Rank (Hard Version)	2700
27	1918G	Permutation of Given	2700
28	2025F	Choose Your Queries	2700
29	2028F	Alice's Adventures in Addition	2700
30	2081C	Quaternary Matrix	2700

Rating 2800

#	ID	Problem	Rating
1	325E	The Red Button	2800
2	418D	Big Problems for Organizers	2800
3	480E	Parking Lot	2800
4	575I	Robots protection	2800
5	600F	Edge coloring of bipartite graph	2800
6	802D3	Marmots (hard)	2800
7	802F	Marmots (hard)	2800
8	819E	Mister B and Flight to the Moon	2800
9	908G	New Year and Original Order	2800
10	983E	NN country	2800
11	1031F	Familiar Operations	2800
12	1039D	You Are Given a Tree	2800
13	1067E	Random Forest Rank	2800
14	1436F	Sum Over Subsets	2800
15	1442D	Sum	2800
16	1578A	Anti-Tetris	2800
17	1609F	Interesting Sections	2800
18	1620F	Bipartite Array	2800
19	1697F	Too Many Constraints	2800
20	1863G	Swaps	2800
21	1904F	Beautiful Tree	2800
22	1913F	Palindromic Problem	2800
23	1976F	Remove Bridges	2800

Rating 2900

#	ID	Problem	Rating
1	19E	Fairy	2900
2	128E	Birthday	2900
3	455E	Function	2900
4	598F	Cut Length	2900
5	741D	Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths	2900
6	802O	April Fools' Problem (hard)	2900
7	871E	Restore the Tree	2900
8	886F	Symmetric Projections	2900
9	980F	Cactus to Tree	2900
10	1032G	Chattering	2900
11	1129D	Isolation	2900
12	1198F	GCD Groups 2	2900
13	1221G	Graph And Numbers	2900
14	1285F	Classical?	2900
15	1310E	Strange Function	2900
16	1452F	Divide Powers	2900
17	1487F	Ones	2900
18	1616F	Tricolor Triangles	2900
19	1622F	Quadratic Set	2900
20	1667D	Edge Elimination	2900
21	1677E	Tokitsukaze and Beautiful Subsegments	2900
22	1773J	Jumbled Trees	2900
23	1810H	Last Number	2900
24	1910J	Two Colors	2900
25	2140F	Sum Minimisation	2900
26	2192F	Fish Fight	2900

Rating 3000

#	ID	Problem	Rating
1	57E	Chess	3000
2	243E	Matrix	3000
3	335F	Buy One, Get One Free	3000
4	364E	Empty Rectangles	3000
5	375E	Red and Black Tree	3000
6	504E	Misha and LCP on Tree	3000
7	618F	Double Knapsack	3000
8	1175G	Yet Another Partiton Problem	3000
9	1211I	Unusual Graph	3000
10	1418F	Equal Product	3000
11	1476F	Lanterns	3000
12	1569F	Palindromic Hamiltonian Path	3000
13	1603D	Artistic Partition	3000
14	1616H	Keep XOR Low	3000
15	1637G	Birthday	3000
16	1854E	Game Bundles	3000
17	1969F	Card Pairing	3000
18	1983G	Your Loss	3000
19	2043G	Problem with Queries	3000
20	2075F	Beautiful Sequence Returns	3000
21	2156F2	Strange Operation (Hard Version)	3000
22	2199I	Strange Process	3000

Rating 3100

#	ID	Problem	Rating
1	164D	Minimum Diameter	3100
2	407E	k-d-sequence	3100
3	442E	Gena and Second Distance	3100
4	468E	Permanent	3100
5	720C	Homework	3100
6	720F	Array Covering	3100
7	804E	The same permutation	3100
8	986D	Perfect Encoding	3100
9	1067D	Computer Game	3100
10	1168E	Xor Permutations	3100
11	1188D	Make Equal	3100
12	1225G	To Make 1	3100
13	1286D	LCC	3100
14	1307G	Cow and Exercise	3100
15	1329D	Dreamoon Likes Strings	3100
16	1425C	Captain of Knights	3100
17	1463F	Max Correct Set	3100
18	1476G	Minimum Difference	3100
19	1510A	ASCII Automata Art	3100
20	1762G	Unequal Adjacent Elements	3100
21	1958I	Equal Trees	3100
22	2046D	For the Emperor!	3100
23	2081G1	Hard Formula	3100

Rating 3200

#	ID	Problem	Rating
1	457F	An easy problem about trees	3200
2	571E	Geometric Progressions	3200
3	690F3	Tree of Life (hard)	3200
4	1007D	Ants	3200
5	1268D	Invertation in Tournament	3200
6	1408I	Bitwise Magic	3200
7	1584G	Eligible Segments	3200
8	1608F	MEX counting	3200
9	1656G	Cycle Palindrome	3200
10	1656H	Equal LCM Subsets	3200

Rating 3300

#	ID	Problem	Rating
1	906E	Reverses	3300
2	1266G	Permutation Concatenation	3300
3	1329E	Dreamoon Loves AA	3300
4	1556H	DIY Tree	3300
5	1580F	Problems for Codeforces	3300
6	1615G	Maximum Adjacent Pairs	3300

Rating 3400

#	ID	Problem	Rating
1	1268E	Happy Cactus	3400
2	1431J	Zero-XOR Array	3400
3	1553I	Stairs	3400
4	1684H	Hard Cut	3400
5	2081G2	Hard Formula (Hard Version)	3400

Rating 3500

#	ID	Problem	Rating
1	799G	Cut the pie	3500
2	1054H	Epic Convolution	3500
3	1458F	Range Diameter Sum	3500
4	1470F	Strange Covering	3500
5	1608G	Alphabetic Tree	3500
6	1616G	Just Add an Edge	3500
7	1718E	Impressionism	3500
8	1774H	Maximum Permutation	3500
9	1827F	Copium Permutation	3500
10	1874F	Jellyfish and OEIS	3500
11	1916G	Optimizations From Chelsu	3500
12	2061H1	Kevin and Stones (Easy Version)	3500
13	2138F	Ode to the Bridge Builder	3500
14	2147I2	Longest Increasing Path (Hard Version)	3500
15	2161H	Cycle Sort	3500
16	2165F	Arctic Acquisition	3500