这题,全零是esay有1是hard,真难呀. #include<bits/stdc++.h> using namespace std; int main(){ int n,i,x,flag=0; cin>>n; for(int i=1;i<=n;i++) { cin>>x; if(x==1) flag=1; } if(flag) cout<<"HARD"; else cout<<"EASY"; ret…

A. In Search of an Easy Problem time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output When preparing a tournament, Codeforces coordinators try treir best to make the first problem as easy as poss…

传送门 今天的签到题. 有一个很显然的结论,gcd(n∗m,k)≤2gcd(n*m,k)\le 2gcd(n∗m,k)≤2. 本蒟蒻是用的行列式求三角形面积证明的. 如果满足这个条件,就可以直接构造出一个满足限制的直角三角形了. 代码: #include<bits/stdc++.h> #define ll long long using namespace std; inline ll read(){ ll ans=0; char ch=getchar(); while(!isdigit(ch…

题目巨简单,主要是给大家翻译一下 给n个数,其中存在1就输出HARD,否则输出EASY,不区分大小写 #include<iostream> #include<cstdio> using namespace std; int n; int main() { scanf("%d",&n); ; ;i<=n;i++) { scanf("%d",&x); ans|=x; } if(ans) printf("HARD\n…

Easy Problem 时间限制:1000 ms  |  内存限制:65536 KB 描写叙述 In this problem, you're to calculate the distance between a point P(xp, yp, zp) and a segment (x1, y1, z1) ? (x2, y2, z2), in a 3D space, i.e. the minimal distance from P to any point Q(xq, yq, zq) on…

题目链接:http://codeforces.com/problemset/problem/1096/D 题意: 有一长度为n的字符串,每一字符都有一个权值,要求现在从中取出若干个字符,使得字符串中没有子串hard,(这里的子串在原串中不需要连续).求取出字符的最小权值和. Vasya is preparing a contest, and now he has written a statement for an easy problem. The statement is a string…

Problem E Easy Problem from Rujia Liu? Though Rujia Liu usually sets hard problems for contests (for example, regional contests like Xi'an 2006, Beijing 2007 and Wuhan 2009, or UVa OJ contests like Rujia Liu's Presents 1 and 2), he occasionally sets…

An easy problem Time Limit:3000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description When Teddy was a child , he was always thinking about some simple math problems ,such as “What it’s 1 cup of water plus 1 pile of d…

Easy Problem from Rujia Liu? Though Rujia Liu usually sets hard problems for contests (for example, regional contests like Xi'an 2006, Beijing 2007 and Wuhan 2009, or UVa OJ contests like Rujia Liu's Presents 1 and 2), he occasionally sets easy probl…

An Easy Problem?! Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7837   Accepted: 1145 Description It's raining outside. Farmer Johnson's bull Ben wants some rain to water his flowers. Ben nails two wooden boards on the wall of his barn…