2020-12-9 and 2020-12-10

2020-12-9 and 2020-12-10

upcICPC区域赛DPCodeForces牛客树形dp数位DP线段树
2019ccpc厦门站G、J

2019ccpc厦门站G、J

CCPCupc点分治数位DP
问题 H: Get Strong

问题 H: Get Strong

upc线段树折半搜索

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