#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
#define rep(i,s,e) for(int (i) = (s);(i) <= (e);(i)++)

i64 n;

int main(){
  cin >> n;

  i64 l = 1;
  i64 r = (i64)1e9 + 1e5;

  while(r - l > 1){
    i64 m = (l + r) / 2;
    if((m) * (m + 1) / 2 > n){
      r = m;
    }
    else{
      l = m;
    }
  }
  if(l * (l + 1) / 2 == n){
    cout << "YES" << endl << l << endl;
  }
  else{
    cout << "NO" << endl;
  }

}