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README.MD
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README.MD

Interactive problems are basically very interesting part of programming they are easy to approach. https://codeforces.com/blog/entry/45307

practice problems:-

  1. https://codeforces.com/problemset/problem/1665/D
  2. https://codeforces.com/problemset/problem/1634/D
  3. https://codeforces.com/problemset/problem/1621/C
  4. https://codeforces.com/problemset/problem/1617/D1
  5. https://codeforces.com/problemset/problem/1617/D2
  6. https://codeforces.com/problemset/problem/1583/D
  7. https://codeforces.com/problemset/problem/1556/D
  8. https://codeforces.com/problemset/problem/1534/D
  9. https://codeforces.com/problemset/problem/1486/C1
  10. https://codeforces.com/problemset/problem/1486/C2
  11. https://codeforces.com/contest/1688/problem/E
  12. https://codeforces.com/contest/1697/problem/D

format to solve interactive problems :

  data_type Query_Fucntion(arguments){
      cout<<"? "<<arguments;
      data_type in;
      cin>>in;
      return in;
  }

by using above function you can ask queries.

Always look for maximum queries and constraint you may get a hint from there how to approach problem. In CF round interactive problems almost every time rated above 1800 and if you know about interactive problems and think a little bit and code it smoothly you will get AC.