#include <iostream>
#include <algorithm>
#include <vector>
#include <cmath>
using namespace std;

int main(){
    long n;
    cin >> n;
    if(round(sqrt(n * 8 + 1)) * round(sqrt(n * 8 + 1)) == n * 8 + 1){
        cout << "YES" << endl;
        cout << (round(sqrt(n * 8 + 1)) - 1) / 2 << endl;
    }else{
        cout << "NO" << endl;
    }
}