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POJ - 1845 Sumdiv(分治)

AcWing - 156 矩阵(二维哈希)

HDU - 5977 Garden of Eden(点分治)

Codeforces Round #250 (Div. 1) - D. The Child and Sequence(线段树)

Codeforces Round #658 (Div. 2) - D. Unmerge(dp)

2020 Multi-University Training Contest 2 - E. New Equipments(网络流)

Codeforces Round #603 (Div. 2) - E. Editor(线段树)

Codeforces Round #608 (Div. 2) - D. Portals(贪心)

Educational Codeforces Round 76 (Rated for Div. 2) - D. Yet Another Monster Killing Problem(贪心)(示例代码

The 2019 ICPC China Nanchang National Invitational and International Silk-Road Programming Contest -