`@`$\texttt{C++}$

#include <bits/stdc++.h>
#define int long long
using namespace std;
signed main()
{
  int n; cin >> n;
  int k = sqrt(n);
  if (k * k == n) cout << "yes";
  else cout >> "no";
}

`@`$\texttt{Python}$

from math import isqrt
n = int(input())
k = isqrt(n)
if k * k == n:
    print("yes")
else:
    print("no")