#include <iostream>
#include <vector>
using namespace std;

int function(int n)
{
    if (n == 1)
    {
        return 1;
    }
    if (n % 2 == 0)
        return function(n / 2);
    if (n % 2 != 0)
        return 3;
}

int main()
{
    int n;
    cin >> n;
    if (function(n) == 1)
        cout << "YES" << endl;
    else
        cout << "NO" << endl;
    return 0;
}