#include <bits/stdc++.h>
using namespace std;
const int MOD1 = 4096;
const long long MOD2 = 244140625;
int main(){
  string S;
  cin >> S;
  long long x = stoll(S);
  int a = -1;
  for (int i = 0; i < MOD1; i++){
    if (i * i % MOD1 == x % MOD1){
      a = i;
    }
  }
  int b = -1;
  for (int i = 0; i < MOD2; i++){
    if ((long long) i * i % MOD2 == x % MOD2){
      b = i;
    }
  }
  if (a == -1 || b == -1){
    cout << "NO" << endl;
  } else {
    cout << "YES" << endl;
  }
}