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Codeforces Round #643 (Div.2) Codeforces 1354E(Graph Coloring,二分图+dp) Codeforces Round #643 (Div.2) Codeforces 909E(Coprocessor,双队列维护) Atcoder Beginner Contest 167 Codeforces 1105D(Kilani and the Game,双队列bfs) Codeforces 1105D(Kilani and the Game,双队列bfs) Atcoder Beginner Contest 167 Codeforces 909E(Coprocessor,双队列维护)
Codeforces Round #643 (Div.2)
Codeforces 1354E(Graph Coloring,二分图+dp)
Codeforces 909E(Coprocessor,双队列维护)
Atcoder Beginner Contest 167
Codeforces 1105D(Kilani and the Game,双队列bfs)