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codeforces

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全部文章 / codeforces （共323篇）

Codeforces Round #615 (Div. 3) F. Three Paths on a Tree（树的直径，dfs）

Codeforces Round #615 (Div. 3) F. Three Paths on a Tree 题目链接：https://codeforces.com/contest/1294/problem/F time limit per test 2 seconds memory li...

2020-01-28

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Codeforces Round #615 (Div. 3) F. Three Paths on a Tree（树的直径，dfs）

Codeforces Round #615 (Div. 3) F. Three Paths on a Tree 题目链接：https://codeforces.com/contest/1294/problem/F time limit per test 2 seconds memory li...

2020-01-28

0 751

Codeforces Round #612 (Div. 2) C. Garland 动态规划

Codeforces Round #612 (Div. 2) C. Garland 动态规划题目链接： https://codeforces.com/contest/1287/problem/C C. Garland time limit per test 1 second mem...

2020-01-18

0 508

Educational Codeforces Round 80 (Rated for Div. 2) ABCDE 题解

Educational Codeforces Round 80 (Rated for Div. 2) A. Deadline 如果n>=d 直接yes 否则对于公式 \(x+ceil(d/(x+1))<=n\) 两边同时乘以x+1 会得到一个关于x的一元二次方程，通过求根...

2020-01-16

0 351

Educational Codeforces Round 80 (Rated for Div. 2) ABCDE 题解

Educational Codeforces Round 80 (Rated for Div. 2) A. Deadline 如果n>=d 直接yes 否则对于公式 \(x+ceil(d/(x+1))<=n\) 两边同时乘以x+1 会得到一个关于x的一元二次方程，通过求根...

2020-01-16

0 467

D. Connected Components Croc Champ 2013 - Round 1 （并查集+技巧）

292D - Connected Components D. Connected Components time limit per test 2 seconds memory limit per test 256 megabytes input standard input out...

2019-10-30

0 388

D. Connected Components Croc Champ 2013 - Round 1 （并查集+技巧）

292D - Connected Components D. Connected Components time limit per test 2 seconds memory limit per test 256 megabytes input standard input out...

2019-10-30

0 680

[Educational Codeforces Round 63 ] D. Beautiful Array （思维+DP）

Educational Codeforces Round 63 (Rated for Div. 2) D. Beautiful Array time limit per test 2 seconds memory limit per test 256 megabytes input s...

2019-10-29

0 361

[Educational Codeforces Round 63 ] D. Beautiful Array （思维+DP）

Educational Codeforces Round 63 (Rated for Div. 2) D. Beautiful Array time limit per test 2 seconds memory limit per test 256 megabytes input s...

2019-10-29

0 405

C. Vasily the Bear and Sequence Codeforces 336C(枚举，思维)

C. Vasily the Bear and Sequence time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output ...

2019-10-25

0 356