E. Vasya and a Tree (前缀和思维) Educational Codeforces Round 54 (Rated for Div. 2) - 代码天地

E. Vasya and a Tree (前缀和思维) Educational Codeforces Round 54 (Rated for Div. 2)

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E. Vasya and a Tree (前缀和思维) Educational Codeforces Round 54 (Rated for Div. 2)

Educational Codeforces Round 54 (Rated for Div. 2) E. Vasya and a Tree(dfs+思维)

Educational Codeforces Round 54 (Rated for Div. 2): E. Vasya and a Tree（DFS+差分）

【Educational Codeforces Round 54 (Rated for Div. 2) E. Vasya and a Tree】 dfs+树状数组

Educational Codeforces Round 54 (Rated for Div. 2) E. Vasya and a Tree （树上差分）

Educational Codeforces Round #54 (Div. 2) E. Vasya and a Tree 技巧題

Educational Codeforces Round 54 E. Vasya and a Tree 树上前缀和或树状数组

Educational Codeforces Round 67 (Rated for Div. 2) E. Tree Painting（树形dp）

Educational Codeforces Round 51 (Rated for Div. 2)E. Vasya and Big Integers(二分哈希+差分)

Educational Codeforces Round 55 (Rated for Div. 2) A - Vasya and Book

Codeforces Educational Codeforces Round 54 (Rated for Div. 2)

Educational Codeforces Round 58 (Rated for Div. 2) E. Polycarp's New Job(思维)

Educational Codeforces Round 60 (Rated for Div. 2) E. Decypher the String 交互思维

Educational Codeforces Round 65 (Rated for Div. 2) E. Range Deleting（思维+coding）

Educational Codeforces Round 65 (Rated for Div. 2) E. Range Deleting（双指针+思维）

【Educational Codeforces Round 54 (Rated for Div. 2) 】

Educational Codeforces Round 54 [Rated for Div. 2]

Educational Codeforces Round 54 (Rated for Div. 2) ABCD

Educational Codeforces Round 48 (Rated for Div. 2) C. Vasya And The Mushrooms（思维）

Educational Codeforces Round 48 (Rated for Div. 2) D. Vasya And The Matrix(思维/构造）

Educational Codeforces Round 52 (Rated for Div. 2)B. Vasya and Isolated Vertices·「模拟，思维」

Educational Codeforces Round 54 (Rated for Div. 2) A B C D E题解

Educational Codeforces Round 53 (Rated for Div. 2) C. Vasya and Robot （前缀和 + 二分）

Codeforces Educational Codeforces Round 44 (Rated for Div. 2) E. Pencils and Boxes

Educational Codeforces Round 43 (Rated for Div. 2) E. Well played!

Educational Codeforces Round 44 (Rated for Div. 2)+E. Pencils and Boxes+树状数组

Educational Codeforces Round 43 (Rated for Div. 2) E. Well played!（贪心）

Educational Codeforces Round 41 (Rated for Div. 2) E. Tufurama

Educational Codeforces Round 41 (Rated for Div. 2) E. Tufurama（树状数组）

Educational Codeforces Round 46 (Rated for Div. 2)E. We Need More Bosses

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