CF Heidi and Library (easy)

题意

题解

CF Heidi and Library (medium)

题意

题解

CF Marmots (easy)

题意

题解

CF Marmots (medium)

题意

题解

CF Fake News (medium)

题意

题解

CF Fake News (hard)

题意

题解

CF Send the Fool Further! (medium)

题意

题解

CF Maximal GCD

题意

题解

CF Magazine Ad

题意

题解

CF Roma and Poker

题意

题解

CF Coprime Subsequences

题意

题解

CF Periodic RMQ Problem

题意

题解

CF Ice cream coloring

题意

题解

CF Array Division

题意

题解