题意:给定两个数 m,n,问你在从1到 n,和从 1到 m中任选两个数加起来是5的倍数,问你有多少个. 析:先计算 m 和 n中有多少个取模5是从0到4的,然后根据排列组合,相乘就得到了小于等于 m 和 n的并且能整除五的个数,然后再加上剩下的. 代码如下: #include <bits/stdc++.h> using namespace std; typedef long long LL; const int aa = 1234567; const int bb = 123456; cons…
Alyona and Numbers 题目链接: http://acm.hust.edu.cn/vjudge/contest/121333#problem/A Description After finishing eating her bun, Alyona came up with two integers n and m. She decided to write down two columns of integers - the first column containing inte…
A. Alyona and Numbers 题目连接: http://www.codeforces.com/contest/682/problem/A Description After finishing eating her bun, Alyona came up with two integers n and m. She decided to write down two columns of integers - the first column containing integers…
A. Home Numbers 题目连接: http://www.codeforces.com/contest/638/problem/A Description The main street of Berland is a straight line with n houses built along it (n is an even number). The houses are located at both sides of the street. The houses with od…
题目链接: B. Modulo Sum time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a sequence of numbers a1, a2, ..., an, and a number m. Check if it is possible to choose a non-empty subse…
Problem G.Giant ScreenTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=86821#problem/G Description You are working in Advanced Computer Monitors (ACM), Inc. The company is building and selling giant c…
题目链接: A. Round House time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasya lives in a round building, whose entrances are numbered sequentially by integers from 1 to n. Entrance n and entra…
