收录了一些比较有趣的题，只要这个菜鸡还没退役就会持续更新~~~
CF1321E World of Darkraft: Battle for Azathoth
CF1311E Construct the Binary Tree
CF1296F Berland Beauty
CF1305F Kuroni and the Punishment
CF1157G Inverse of Rows and Columns
CF23C Oranges and Apples
CF1301F Super Jaber
Codeforces Round #615 (Div. 3) (CF1294D、E、F)题解