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

int main(){
    unsigned long long N,ans,i;
    cin >> N;
    ans = (sqrt(8*N+1)-1)/2;
    for(i=ans;i<ans+50;i++){
        if(ans*(ans+1)==2*N&&ans>0){
            cout << "YES\n" << ans << endl;
            return 0;
        }
    }
    cout << "NO" << endl;
    return 0;
}