Hello! Can someone recommend me good combinatorics problems/materials?
Hello! Can someone recommend me good combinatorics problems/materials?
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I also want it man. I am too weak in combinatorics
have you try this? https://codeforces.me/blog/entry/55274
Wow thanks!
This is my favourite combinatorics problem: https://codeforces.me/problemset/problem/1312/D
Oh ok thx