Please subscribe to the official Codeforces channel in Telegram via the link https://t.me/codeforces_official. ×

_QWOiNYUIVMPFSBKLiGSMAP_'s blog

By _QWOiNYUIVMPFSBKLiGSMAP_, history, 6 years ago, In English

could anyone explai the problem to me and it is solution ? http://poj.org/problem?id=2096