#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ull = unsigned long long;
#define rep(i,a) for(int i=0;i<(a);i++)
#define MOD 1000000007

int main(){
  ll n; cin>>n;
  for(ll i=1;i<60*60*24;i++){
    ll num=i*(i+1)/2;
    if(num==n){
      cout<<"YES"<<endl;
      cout<<i<<endl;
      return 0;
    }
    if(num>n){
      cout<<"NO"<<endl;
      return 0;
    }
  }
  cout<<"NO"<<endl;
  return 0;
}