SCU4436-Easy Math

题目链接：http://acm.scu.edu.cn/soj/problem.action?id=4436

题意：给你n个整数，求这n个数的平方根和是否是一个整数；

#include <iostream>#include <cstdio>#include <stack>#include <queue>#include <cstring>#include <string>#include <algorithm>#include <cmath>#include <bitset>#include <functional>#include <vector>#include <set>#include <map>using namespace std;#define LL long longconst int INF=0x3f3f3f3f;int a[100090];int main(){    int n;    while(~scanf("%d",&n))    {        int flag=1;        for(int i=1;i<=n;i++)        {            scanf("%d",&a[i]);            int k=sqrt(a[i]);            if(k*k!=a[i]) flag=0;        }        if(flag) printf("Yes\n");        else printf("No\n");    }    return 0;}