Codeforces ⁸

2018

Dreamoon and Stairs 08-10

Dreamoon and WiFi（组合数学） 08-10

Codeforces Round 502(Div.1 + Div.2) 08-09

Bear and Finding Criminals-Codeforces680B 07-31

Bear and Five Cards-Codeforces680A 07-31

Piles-With-Stones 07-31

Adjacent Replacements 07-22

Educational Codeforces Round 47 (Rated for Div. 2) 07-22

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