=====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====