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codeforces

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全部文章 / codeforces （共323篇）

[Educational Codeforces Round 56 (Rated for Div. 2)] —G. Multidimensional Queries（二进制状压，线段树）

[Educational Codeforces Round 56 (Rated for Div. 2)] —G. Multidimensional Queries（二进制状压，线段树） G. Multidimensional Queries time limit per test 6 seco...

2020-06-25

0 452

2015 HIAST Collegiate Programming Contest] 题解（AK）

[2015 HIAST Collegiate Programming Contest] 题解（AK）简单的题或者我队友ac的题目没有写思路，只贴了代码，自己ac的题目把题意和思路都说了一下，也贴上了代码。 [A - Who is the winner?] #include <bit...

2020-06-03

0 442

[Codeforces Round #642 (Div. 3)] ABCDEF题解

[Codeforces Round #642 (Div. 3)] ABCDEF题解 A. Most Unstable Array 思路：当\(n=1\)时答案为\(\text 0\)，当\(n=2\)时答案为\(\mathit n\)，当\(n=3\)时答案为\(2*n\)，代码...

2020-05-15

0 400

[NCD 2019] G. Ali and the Breakfast （解析几何）

[NCD 2019] G. Ali and the Breakfast （解析几何） G. Ali and the Breakfast time limit per test 1 second memory limit per test 256 megabytes input stan...

2020-05-07

0 465

[2019 ICPC Universidad Nacional de Colombia Programming Contest] 题解

[2019 ICPC Universidad Nacional de Colombia Programming Contest] 题解 A. Amazon Amazon has grown so much these days, it has decided to build its own s...

2020-04-30

0 494

[Educational Codeforces Round 86 (Rated for Div. 2)] E. Placing Rooks （组合数学，容斥定律）

[Educational Codeforces Round 86 (Rated for Div. 2)] E. Placing Rooks （组合数学，容斥定律） E. Placing Rooks time limit per test 2 seconds memory limit per ...

2020-04-29

0 418

[Codeforces Round #636 (Div. 3)] E. Weights Distributing （BFS+最短路+贪心）

[Codeforces Round #636 (Div. 3)] E. Weights Distributing （BFS+最短路+贪心） E. Weights Distributing time limit per test 2 seconds memory limit per test ...

2020-04-22

0 326

[Codeforces Round #320 (Div. 2) -E. Weakness and Poorness (三分/二分)

[Codeforces Round #320 (Div. 2) -E. Weakness and Poorness (三分/二分) E. Weakness and Poorness time limit per test 2 seconds memory limit per test 25...

2020-04-06

0 393

[Codeforces Round #320 (Div. 2) C. A Problem about Polyline （数学）

[Codeforces Round #320 (Div. 2) C. A Problem about Polyline （数学） C. A Problem about Polyline time limit per test 1 second memory limit per test 2...

2020-04-04

0 382

[Codeforces Round #630 (Div. 2)] - E. Height All the Same （组合数学）

[Codeforces Round #630 (Div. 2)] - E. Height All the Same （组合数学） E. Height All the Same time limit per test 2 seconds memory limit per test 512 m...

2020-04-01

0 326