2020-02-14

2/14 バチャ Codeforces Round #615 (Div. 3) & Educational Codeforces Round 81 (Rated for Div. 2)

バチャ

Codeforces Round #615 (Div. 3)

2020-02-12

Educational Codeforces Round 77 F. Colored Tree

詰んだ問題 HL分解

F. Colored Tree

2020-02-12

Educational Codeforces Round 80 F. Red-Blue Graph

詰んだ問題 フロー

F. Red-Blue Graph