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CCF 202012-5星际旅行(20~100分) CodeForces 1187E Tree Painting Codeforces 1221D - Make The Fence Great Again(DP) Poor God Water(ACM-ICPC 2018 焦作赛区网络预赛 矩阵快速幂) CodeForces 1324F Maximum White Subtree CodeForces 1311E Construct the Binary Tree Codeforces 1257E - The Contest Codeforces 1257D - Yet Another Monster Killing Problem
CCF 202012-5星际旅行(20~100分)
CodeForces 1187E Tree Painting
Codeforces 1221D - Make The Fence Great Again(DP)
Poor God Water(ACM-ICPC 2018 焦作赛区网络预赛 矩阵快速幂)
CodeForces 1324F Maximum White Subtree
CodeForces 1311E Construct the Binary Tree
Codeforces 1257E - The Contest
Codeforces 1257D - Yet Another Monster Killing Problem