#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
using namespace std;


ll n;

inline bool check(ll m){
	if(m>=2*n)return 1;
	if(m*(m+1)>2*n){
		return 1;
	}
	return 0;
}

int main(){
	cin>>n;
	ll ok=1,ng=2*(ll)1e18+1;
	while(ng-ok>1){
		ll mid=(ok+ng)/2;
		//cerr<<mid<<endl;
		if(check(mid)){
			ng=mid;
		}else ok=mid;
	}
	if(ok*(ok+1)==2*n){
		cout<<"YES"<<endl;
		cout<<ok<<endl;
	}else{
		cout<<"NO"<<endl;
	}
	return 0;
}