#include "bits/stdc++.h"
#define fastcin {\
    cin.tie(0);\
    ios::sync_with_stdio(false);\
}
using namespace std;

int main() {
    fastcin;
    unsigned long long n;
    cin >> n;
    unsigned long long a = (sqrt(n*8 +1) -1)/2;
    if((a*a +a -2*n)==0) cout << "YES" << '\n' << a << '\n';
    else cout << "NO" << '\n';
    return 0;
}