#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
int main() {	
	long long n;
	cin >> n;
	long long ok = 1000000007, ng = 0;
	while (ok - ng > 1) {
		long long mid = (ok + ng) / 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;
	}
}