#include <iostream>
using namespace std;
typedef long long ll;
ll calc(ll x){
  return x*(x+1)/2;
  }
int main(){
  ll n;cin>>n;
  ll left=0,right=1LL<<31,mid;
  while(right-left>1){
    mid=(left+right)/2;
    if(calc(mid)<n)left=mid;
    else right=mid;
    }
  if(calc(right)==n){
    cout<<"YES"<<endl;
    cout<<right<<endl;
    }
  else cout<<"NO"<<endl;
  return 0;      
  }