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codeforces

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全部文章 / codeforces （共323篇）

【CodeForces】915 G. Coprime Arrays 莫比乌斯反演,前缀和，差分

Coprime Arrays CodeForces - 915G Let's call an array a of size n coprime iff gcd(a1, a2, ..., *a**n) = 1, where gcd* is the greatest common divisor ...

2019-10-08

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Make It Connected CodeForces - 1095F (建图+最小生成树)

Make It Connected CodeForces - 1095F You are given an undirected graph consisting of nn vertices. A number is written on each vertex; the number on...

2019-10-05

0 394

Make It Connected CodeForces - 1095F (建图+最小生成树)

Make It Connected CodeForces - 1095F You are given an undirected graph consisting of nn vertices. A number is written on each vertex; the number on ...

2019-10-05

0 408

Physical Education Lessons CodeForces - 915E （动态开点线段树）

Physical Education Lessons CodeForces - 915E This year Alex has finished school, and now he is a first-year student of Berland State University. Fo...

2019-10-04

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Physical Education Lessons CodeForces - 915E （动态开点线段树）

Physical Education Lessons CodeForces - 915E This year Alex has finished school, and now he is a first-year student of Berland State University. For...

2019-10-04

0 713

Almost Acyclic Graph CodeForces - 915D （思维+拓扑排序判环）

Almost Acyclic Graph CodeForces - 915D time limit per test 1 second memory limit per test 256 megabytes input standard input output standard...

2019-10-03

0 305

Almost Acyclic Graph CodeForces - 915D （思维+拓扑排序判环）

Almost Acyclic Graph CodeForces - 915D time limit per test 1 second memory limit per test 256 megabytes input standard input output standard ...

2019-10-03

0 502

Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elements （思维，前缀和）

Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elements time limit per test 1 second memory limit per test 256 megabytes inpu...

2019-10-02

0 353

Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elements （思维，前缀和）

Educational Codeforces Round 37 (Rated for Div. 2)C. Swap Adjacent Elements time limit per test 1 second memory limit per test 256 megabytes inpu...

2019-10-02

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Educational Codeforces Round 37 G. List Of Integers （二分，容斥定律，数论）

G. List Of Integers time limit per test 5 seconds memory limit per test 256 megabytes input standard input output standard output Let's denot...

2019-10-02

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