GoldenFingers

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HDOJ:6333-Problem B. Harvest of Apples(组合数学+莫队算法+逆元)

E. Almost Regular Bracket Sequence

F. Make It Connected

HDOJ:1533-Going Home(最小费用流)

HDOJ:6356-Glad You Came(线段树剪枝)

POJ-3436:ACM Computer Factory (Dinic最大流)

YSZOJ:#247. [福利]可持久化线段树 (最适合可持久化线段树入门)

Educational Codeforces Round 47 (Rated for Div. 2) :E. Intercity Travelling

Codeforces Round #482 (Div. 2) :B - Treasure Hunt

POJ-2155:Matrix(二维树状数祖)