Codeforces Round #599 (Div. 1) A. Tile Painting 數論
C. Tile Painting Ujan has been lazy lately, but now has decided to bring his yard to good shape. Fi ...
原文：Codeforces Round #356 (Div. 2) A. Bear and Five Cards 水題
A. Bear and Five Cards 題目連接： http: www.codeforces.com contest problem A Description A little bear Limak plays a game. He has five cards. There is one number written on each card. Each number is a pos ...
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