龍木

分类

c#(1) codeforces(130) dp(2) map(2) RMQ(1) 一些神奇的东西(1) 三分(1) 前缀和(1) 区间dp(1) 博弈(2) 大数(1) 平面几何(1) 并查集(1) 快数幂(1) 总结(1) 打表(1) 找规律(4) 数学(8) 暴力(1) 最小公约数(1) 最小生成树(1) 未归档(31) 杭电(4) 浅谈(8) 深度优先搜索(1) 牛客(10) 组合数(1) 网络流最大流(2) 题解(3)

/ 注册

全部文章（共613篇）

D. MEX maximizing

链接：https://codeforces.com/contest/1294/problem/D Recall that MEX of an array is a minimum non-negative integer that does not belong to the array. Exa...

2020-09-15

0 673

E. Two Arrays and Sum of Functions

链接：https://codeforces.com/contest/1165/problem/E You are given two arrays aa and bb, both of length nn. Let's define a function f(l,r)=∑l≤i≤rai⋅bif(...

2020-09-15

0 742

B. Spreadsheets

链接：https://codeforces.com/contest/1/problem/B In the popular spreadsheets systems (for example, in Excel) the following numeration of columns is used...

2020-09-15

0 536

A. DZY Loves Sequences

链接：https://codeforces.com/contest/446/problem/A DZY has a sequence a, consisting of n integers. We'll call a sequence ai, ai + 1, ..., aj (1 ≤ i ≤ j...

2020-09-15

0 543

B. Painting Eggs

链接：https://codeforces.com/contest/282/problem/B The Bitlandians are quite weird people. They have very peculiar customs. As is customary, Uncle J. w...

2020-09-15

0 374

B. Infinite Prefixes

链接：https://codeforces.com/contest/1295/problem/B You are given string ss of length nn consisting of 0-s and 1-s. You build an infinite string tt as a...

2020-09-15

0 383

C. Obtain The String

链接：https://codeforces.com/contest/1295/problem/C You are given two strings ss and tt consisting of lowercase Latin letters. Also you have a string zz...

2020-09-15

0 583

D. Same GCDs

链接：https://codeforces.com/contest/1295/problem/D You are given two integers aa and mm. Calculate the number of integers xx such that 0≤x<m0≤x<m...

2020-09-15

0 0

B. Azamon Web Services

链接：https://codeforces.com/contest/1281/problem/B Your friend Jeff Zebos has been trying to run his new online company, but it's not going very well. ...

2020-09-15

0 413

D. Almost All Divisors

链接：https://codeforces.com/problemset/problem/1165/D We guessed some integer number xx. You are given a list of almost all its divisors. Almost all me...

2020-09-15

0 558