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python3

Day 1

https://adventofcode.com/2020/day/1

Part 1

Test

given = '''
1721
979
366
299
675
1456
'''
given = [int(x) for x in given.split('\n')[1:-1]]
given
try:
    for a in given:
        for b in [x for x in given if x != a]:
            if a + b == 2020:
                print(f'{a} plus {b} is 2020,')
                print(f'so {a} times {b} is {a*b}.')
                raise Exception() 
except:
    ...

Run

given = '''
1826
1895
1427
1931
1651
1638
1507
1999
1886
1824
1902
1995
1945
1735
1823
1595
1936
1476
2010
1833
1932
1772
1791
1814
1783
1957
1901
1600
1502
1521
1812
1974
1880
1790
1672
1541
1807
426
1858
1699
1964
1996
1983
1498
1863
1976
1492
1930
1838
1941
1764
1929
1897
2009
1853
1753
1759
1860
1952
1988
1727
1751
1943
1830
1645
1907
1857
1714
1798
1944
1868
1630
959
2003
1987
1890
1962
1928
1872
1912
1709
1809
1650
1980
1737
1898
1817
1736
1991
1788
1776
1845
1854
1963
1554
1949
1576
1819
1960
699
1990
1757
1698
1596
304
1982
1477
1961
1636
1619
1946
1876
1592
1848
1707
1958
1874
1867
52
1881
1665
1463
1799
1979
677
1710
1869
1639
1787
1633
1956
1457
1581
2005
1782
1904
1910
62
1593
1695
1915
1922
1797
1715
1981
1925
1893
1562
1789
2008
1939
1669
1992
1652
117
1609
1686
1953
2007
599
1547
1959
1691
1520
1444
1641
887
1579
1778
1977
1768
1942
1713
1603
1926
1855
1655
1673
1887
1994
1839
1725
928
1771
1761
1971
1571
1806
1821
1624
1701
1436
1748
1921
1617
2004
1792
1732
1740
1831
'''
given = [int(x) for x in given.split('\n')[1:-1]]
given
try:
    for a in given:
        for b in [x for x in given if x != a]:
            if a + b == 2020:
                print(f'{a} plus {b} is 2020,')
                print(f'so {a} times {b} is {a*b}.')
                raise Exception() 
except:
    ...

Part 2

Test

given = '''
1721
979
366
299
675
1456
'''
given = [int(x) for x in given.split('\n')[1:-1]]
given
try:
    for a in given:
        for b in [x for x in given if x != a]:
            for c in [x for x in given if x != a and x != b]:
                if a + b + c == 2020:
                    print(f'{a} plus {b} plus {c} is 2020,')
                    print(f'so {a} times {b} times {c} is {a*b*c}.')
                    raise Exception() 
except:
    ...

Run

given = '''
1826
1895
1427
1931
1651
1638
1507
1999
1886
1824
1902
1995
1945
1735
1823
1595
1936
1476
2010
1833
1932
1772
1791
1814
1783
1957
1901
1600
1502
1521
1812
1974
1880
1790
1672
1541
1807
426
1858
1699
1964
1996
1983
1498
1863
1976
1492
1930
1838
1941
1764
1929
1897
2009
1853
1753
1759
1860
1952
1988
1727
1751
1943
1830
1645
1907
1857
1714
1798
1944
1868
1630
959
2003
1987
1890
1962
1928
1872
1912
1709
1809
1650
1980
1737
1898
1817
1736
1991
1788
1776
1845
1854
1963
1554
1949
1576
1819
1960
699
1990
1757
1698
1596
304
1982
1477
1961
1636
1619
1946
1876
1592
1848
1707
1958
1874
1867
52
1881
1665
1463
1799
1979
677
1710
1869
1639
1787
1633
1956
1457
1581
2005
1782
1904
1910
62
1593
1695
1915
1922
1797
1715
1981
1925
1893
1562
1789
2008
1939
1669
1992
1652
117
1609
1686
1953
2007
599
1547
1959
1691
1520
1444
1641
887
1579
1778
1977
1768
1942
1713
1603
1926
1855
1655
1673
1887
1994
1839
1725
928
1771
1761
1971
1571
1806
1821
1624
1701
1436
1748
1921
1617
2004
1792
1732
1740
1831
'''
given = [int(x) for x in given.split('\n')[1:-1]]
given
try:
    for a in given:
        for b in [x for x in given if x != a]:
            for c in [x for x in given if x != a and x != b]:
                if a + b + c == 2020:
                    print(f'{a} plus {b} plus {c} is 2020,')
                    print(f'so {a} times {b} times {c} is {a*b*c}.')
                    raise Exception() 
except:
    ...