#include<iostream>
#include<vector>
#include<utility>
#include<algorithm>
#include<cstring>
using namespace std;

typedef long long ll;
int main(){
  ll n,i=1;
  cin>> n;
  while(1){
    ll k = i*i+i-2*n;
    if(k==0){
      cout<<"YES"<<"\n"<<i;
      break;
    }else if(k>0){
      cout<<"NO"<<"\n";
      break;
    }
    i++;
  }
}