#include <iostream>
using namespace std;

using int64 = long long;

int main() {
    int64 n;
    cin >> n;

    int64 ok = 1, ng = (1LL << 31);
    while (ng - ok > 1) {
        int64 mid = (ok + ng) / 2;
        if (mid * (1 + mid) / 2 <= n) {
            ok = mid;
        } else {
            ng = mid;
        }
    }
    if (ok * (1 + ok) / 2 == n) {
        cout << "YES" << endl;
        cout << ok << endl;
    } else {
        cout << "NO" << endl;
    }

    return 0;
}