Ranklist frozen?

Ranklist is now frozen. Final result will be published after the end of the contest.

[A. Kth Permutation Revisited] O(n) solution getting TLE. Anything special about the judge?

[D. Nim Heaps] Can sum of all n over all test case be arbitrary large?

Read the problem statement carefully.

[D. Nim Heaps] In problem D, if there are 2 heaps where the number of stones ar..