Hello CodeForces, today I tried solving the problem from a recent contest: 1923E - Count Paths
My Solution:
If you see any problems with the code, please let me know as I can't see the problem. If you don't understand a part of the code, please ask and I will clarify.
Submission: 255437477
UPD: The runtime takes more than 30 seconds! So I guess the runtime is O(N^2) somehow.
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Auto comment: topic has been updated by Seferoglu (previous revision, new revision, compare).
Your centroid finding code has a bug where it compares the size of its child with the parent, but it should check with the size of the current root.