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

int main(){
    long n;
    cin >> n;
    long left = 0, right = 2e9;
    while(left <= right){
        long middle = (left + right) / 2;
        if(middle * (middle + 1) / 2 > n){
            right = middle - 1;
        }else if(middle * (middle + 1) / 2 < n){
            left = middle + 1;
        }else{
            cout << "YES" << endl << middle << endl;
            return 0;
        }
    }
    cout << "NO" << endl;
}