SuperJ6's blog

Similar Problems
By SuperJ6, history, 21 month(s) ago, In English

What are some examples of surprisingly similar problems across different contests on codeforces?

  • Vote: I like it
  • +25
  • Vote: I do not like it

»
21 month(s) ago, # |
  Vote: I like it +37 Vote: I do not like it

765F and 1793F from a week ago.

→ Reply
  • »
    »
    21 month(s) ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    I think this blog is for this exact answer lol.

    → Reply
    • »
      »
      »
      21 month(s) ago, # ^ |
        Vote: I like it +14 Vote: I do not like it

      The blog asks for similar problems, not same problem

      → Reply
»
21 month(s) ago, # |
  Vote: I like it +5 Vote: I do not like it

1771B and 652C. They are basically the same task but the permutation is $$$\left[1,2,3,...,n-1,n\right]$$$ in 1771B while it can be any permutation in 652C

→ Reply
»
21 month(s) ago, # |
  Vote: I like it +5 Vote: I do not like it

This 1790F - Timofey and Black-White Tree and 342E - Xenia and Tree overall still pretty interesting problem

→ Reply
»
21 month(s) ago, # |
  Vote: I like it +13 Vote: I do not like it

1141E - Superhero Battle and 1490G - Old Floppy Drive they are both from Div 3 contests, one has multiple testcases while the other doesn't.

→ Reply
»
21 month(s) ago, # |
  Vote: I like it +5 Vote: I do not like it

1795C in educational round same as 923B

→ Reply
»
21 month(s) ago, # |
← Rev. 2   Vote: I like it -20 Vote: I do not like it

All the problems until 2000 rating that involve the concept of permutation groups , permutation parity and permutation cycles are similar;

→ Reply
»
21 month(s) ago, # |
  Vote: I like it -12 Vote: I do not like it

407B and 1552F. The latter is just the former with a ton of shit added on top.

→ Reply
»
21 month(s) ago, # |
  Vote: I like it 0 Vote: I do not like it

1462C - Unique Number and 1714C - Minimum Varied Number are the same, except the constraints (45 vs 50)

→ Reply
»
21 month(s) ago, # |
  Vote: I like it 0 Vote: I do not like it

713C - Sonya and Problem Wihtout a Legend and 13C - Sequence

Differences: strictly increasing/non-decreasing, N=3000/5000. In other words, no difference...

→ Reply