数学 SCU 4436 Easy Math

题目传送门

 /*
     数学题：当有一个数开根号后是无理数，则No
 */
 #include <cstdio>
 #include <algorithm>
 #include <cstring>
 #include <cmath>
 #include <vector>
 #include <iostream>
 #include <string>
 #include <map>
 #include <set>
 using namespace std;

 typedef long long ll;
 const int MAXN = 1e5 + ;
 const int INF = 0x3f3f3f3f;

 bool ok(int x)
 {
     int y = sqrt (x);
     if (y * y == x)    return true;
     else    return false;
 }

 int main(void)        //SCU 4436    Easy Math
 {
     // freopen ("A.in", "r", stdin);

     int n;
     while (scanf ("%d", &n) == )
     {
         bool flag = true;
         for (int i=; i<=n; ++i)
         {
             int x;    scanf ("%d", &x);
             if (!ok (x))    flag = false;
         }

         if (flag)    puts ("Yes");
         else    puts ("No");
     }

     return ;
 }