Please read the new rule regarding the restriction on the use of AI tools. ×

_QWOiNYUIVMPFSBKLiGSMAP_'s blog

By _QWOiNYUIVMPFSBKLiGSMAP_, history, 6 years ago, In English

Could any one explain to me the solution of this problem ?

http://codeforces.net/contest/248/problem/C

| Write comment?