#include <cstdio>
#include <cstdlib>
#include <cstddef>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>
#include <iostream>
#include <iomanip>

int main(void)
{
	long n;
	std::cin >> n;
    long min, max, mid;
    if(n == 1) {std::cout << "YES" << std::endl << 1 << std::endl; return 0; }
    min = 1;
    max = 1420000000;/* >= sqrt(2)*10^9 */
    while(true){
        mid = (min + max) / 2;
        long tmp = mid * (mid + 1) / 2;
        if(tmp == n){
            std::cout << "YES" << std::endl << mid << std::endl;
            return 0;
        }
        if(max - min <= 1){
            break;
        }
        if(tmp < n){
            min = mid;
        } else {
            max = mid;
        }
    }
    std::cout << "NO" << std::endl;
	return 0;
}