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codeforces

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全部文章 / codeforces （共323篇）

Codeforces 909C Python Indentation：树状数组优化dp

C. Python Indentation time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output In Python, code blocks...

2019-07-10

0 405

Educational Codeforces Round 32 Maximum Subsequence CodeForces - 888E （meet-in-the-middle，二分，枚举）

You are given an array a consisting of n integers, and additionally an integer m. You have to choose some sequence of indices b1, b2, ..., bk (1 ≤ b1 ...

2019-06-27

0 353

Educational Codeforces Round 32 Maximum Subsequence CodeForces - 888E （meet-in-the-middle，二分，枚举）

You are given an array a consisting of n integers, and additionally an integer m. You have to choose some sequence of indices b1, b2, ..., bk (1 ≤ b1 ...

2019-06-27

0 326

Educational Codeforces Round 32 Almost Identity Permutations CodeForces - 888D （组合数学）

A permutation p of size n is an array such that every integer from 1 to n occurs exactly once in this array. Let's call a permutation an almost ident...

2019-06-27

0 464

Educational Codeforces Round 32 Almost Identity Permutations CodeForces - 888D （组合数学）

A permutation p of size n is an array such that every integer from 1 to n occurs exactly once in this array. Let's call a permutation an almost ident...

2019-06-27

0 337

Codeforces Round #569 (Div. 2) 题解A - Alex and a Rhombus+B - Nick and Array+C - Valeriy and Dequ+D - Tolik and His Uncle

A. Alex and a Rhombus time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output While playing with geom...

2019-06-22

0 440

Codeforces Round #569 (Div. 2) 题解A - Alex and a Rhombus+B - Nick and Array+C - Valeriy and Dequ+D - Tolik and His Uncle

A. Alex and a Rhombus time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output While playing with geom...

2019-06-22

0 333

Codeforces Round #567 (Div. 2)B. Split a Number (字符串，贪心)

B. Split a Number time limit per test2 seconds memory limit per test512 megabytes inputstandard input outputstandard output Dima worked all day and wr...

2019-06-16

0 661

Codeforces Round #567 (Div. 2)B. Split a Number (字符串，贪心)

B. Split a Number time limit per test2 seconds memory limit per test512 megabytes inputstandard input outputstandard output Dima worked all day and wr...

2019-06-16

0 280

Vasya And The Matrix CodeForces - 1016D （思维+构造）

Now Vasya is taking an exam in mathematics. In order to get a good mark, Vasya needs to guess the matrix that the teacher has constructed! Vasya k...

2019-05-02

0 316