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Angle Beats Gym - 102361A(计算几何)

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腾讯笔试——彩色楼房

query 2019徐州网络赛(树状数组)

three arrays HDU - 6625 (字典树)

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HDU 6595 Everything Is Generated In Equal Probability (期望dp,线性推导)

K-string HDU - 4641 (后缀自动机)

Codeforces Round #604 (Div. 2) DEF题解

Codeforces Round #608 (Div. 2) 题解

Codeforces Round #609 (Div. 2) 题解

Codeforces Round #612 (Div. 2)

Codeforces Round #613 (Div. 2)

Educational Codeforces Round 80 (Rated for Div. 2) 题解

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Codeforces Round #610 (Div. 2) 题解

Educational Codeforces Round 78 (Rated for Div. 2) 题解