#include<iostream>
#include<cstdio>
#include<cstring>
#include <cstdlib>  
#include <cmath>   
#include<cctype>
#include<string>
#include<set>
#include <map>
#include<algorithm>
#include <functional>
#include<vector>
#include<climits>
#include<stack>
#include<queue>
#include <deque>
#include <climits>
#include <typeinfo>
#include <utility> 
#define all(x) (x).begin(),(x).end()
#define rep(i,m,n) for(int i = m;i < n;++i)
#define pb push_back
#define rrep(i,m,n) for(int i = m;i >= n;--i)
#define INF INT_MAX-1;
using namespace std;
using ll = long long;
using R = double;
const ll inf = 1LL << 50;
const ll MOD = 1e9 + 7;
struct edge { ll from; ll to; ll cost; };





int main(){
	ll n;
	cin >> n;

	ll ng = 0; ll ok = 3e9;
	while (ng+1 != ok) {
		ll mid =(ng+ok)/2;
		if (mid*(mid+1)/2 >= n)ok = mid;
		else ng = mid;
	}

	if (ok*(ok+1)/2==n) {
		cout << "YES" << endl;
		cout << ok << endl;
	}
	else {
		cout << "NO" << endl;
	}

	return 0;
}