AtCoder - 2705 Yes or No

【AtCoder - 2705 Yes or No】的更多相关文章

AtCoder - 2705 Yes or No

Problem Statement You are participating in a quiz with N+M questions and Yes/No answers. It's known in advance that there are N questions with answer Yes and M questions with answer No, but the questions are given to you in random order. You have no…

BZOJ 2705: [SDOI2012]Longge的问题 [欧拉函数]

2705: [SDOI2012]Longge的问题 Time Limit: 3 Sec Memory Limit: 128 MBSubmit: 2553 Solved: 1565[Submit][Status][Discuss] Description Longge的数学成绩非常好,并且他非常乐于挑战高难度的数学问题.现在问题来了:给定一个整数N,你需要求出∑gcd(i, N)(1<=i <=N). Input 一个整数,为N. Output 一个整数,为所求的答案. Sample Inp…

BZOJ 2705: [SDOI2012]Longge的问题

2705: [SDOI2012]Longge的问题 Time Limit: 3 Sec Memory Limit: 128 MBSubmit: 2554 Solved: 1566[Submit][Status][Discuss] Description Longge的数学成绩非常好,并且他非常乐于挑战高难度的数学问题.现在问题来了:给定一个整数N,你需要求出∑gcd(i, N)(1<=i <=N). Input 一个整数,为N. Output 一个整数,为所求的答案. Sample Inp…

Dividing a Chocolate（zoj 2705）

Dividing a Chocolate zoj 2705 递推,找规律的题目: 具体思路见:http://blog.csdn.net/u010770930/article/details/9769333 #include <stdio.h> #include <iostream> using namespace std; ]; int main() { int i,j,maxx; long long m,n; a[]=; a[]=; while(~scanf("%lld…

AtCoder Regular Contest 061

AtCoder Regular Contest 061 C.Many Formulas 题意给长度不超过\(10\)且由\(0\)到\(9\)数字组成的串S. 可以在两数字间放\(+\)号. 求所有方案的数字和. 思路 \(2^{|S|-1}\)枚举加号的放置状态代码 Many Formulas D.Snuke's Coloring 题意在一个\(H \times W(3 \le H,W \le 10^9)\)的棋盘上,有\(N(N \le 10^5)\)个格子被染成黑色,其余格子为白色.…

【BZOJ】【2705】【SDOI2012】Longge的问题

欧拉函数/狄利克雷卷积/积性函数 2705: [SDOI2012]Longge的问题 Time Limit: 3 Sec Memory Limit: 128 MBSubmit: 1275 Solved: 820[Submit][Status][Discuss] Description Longge的数学成绩非常好,并且他非常乐于挑战高难度的数学问题.现在问题来了:给定一个整数N,你需要求出∑gcd(i, N)(1<=i <=N). Input 一个整数,为N. Output 一个整数,为所…

AtCoder Grand Contest 001 C Shorten Diameter 树的直径知识

链接:http://agc001.contest.atcoder.jp/tasks/agc001_c 题解(官方): We use the following well-known fact about trees.Let T be a tree, and let D be the diameter of the tree. • If D is even, there exists an vertex v of T such that for each vertex w inT, the dis…