#include <iostream>
using namespace std;
int main() {
    int a; cin >> a;
    int b = 2;
    if(a > 0) {
        while (b < a) {
            b *= 2;
        }
    }
    else {
        b *= -1;
        while (b > a) {
            b *= 2;
        }
    }
    if(b == a) {
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    return 0;
}