#include <iostream>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <string>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <stdio.h>
using namespace std;
#define int long long
int MOD = 1000000007;
signed main() {
	cin.tie(0);
	ios::sync_with_stdio(false);
	unsigned long long N;
	cin >> N;
	//N = (unsigned long long)((unsigned long long)2000000000 * (2000000000 - 1))/2;
	//cerr << 2 * N << endl;
	unsigned long long u = (2 * 1000000000ull) + 5;
	unsigned long long d = 0;
	unsigned long long m;
	while (u != 1 + d) {
		m = (u + d) / 2;
		if (m*(m + 1) <= 2 * N) {
			d = m;
		}
		else {
			u = m;
		}
		//cerr << m*(m+1) << endl;
	}
	m = d;
	if (N == 1) {
		cout << "YES" << endl;
		cout << 1 << endl;
	}
	else {
		if (m*(m + 1) == 2 * N) {
			cout << "YES" << endl;
			cout << m << endl;
		}
		else {
			cout << "NO" << endl;
		}

	}
}