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[Luogu4916]魔力环[Burnside引理组合计数容斥]

[JSOI2016]病毒感染[dp]

[APIO2015]巴厘岛的雕塑[按位贪心+dp]

[THUSC2017]巧克力[斯坦纳树+随机化]

[CF963E]Circles of Waiting[高斯消元网格图优化+期望]

[CF1009G]Allowed Letters[贪心+霍尔定理]

[arc102E]Stop. Otherwise...[容斥+二项式定理]

[CF1038F]Wrap Around[AC自动机+dp]

[CF995F]Cowmpany Cowmpensation[树形dp+拉格朗日插值]

[CF1010E]Store[kd-tree]

[CERC2017]Intrinsic Interval[scc+线段树优化建图]

[CF1039D]You Are Given a Tree[贪心+根号分治]

[CF1063F]String Journey