#include <bits/stdc++.h>
using namespace std;

int main()
{
	int64_t n;
	cin >> n;
	int64_t l = 0, r = 1ll << 30;
	while (1 < r - l)
	{
		int64_t mid = (l + r) / 2, sum = 0;
		for (int64_t tmp = mid; tmp; tmp /= 2)
		{
			sum += tmp;
		}
		(sum <= n ? l : r) = mid;
	}
	int64_t m = 0;
	for (; l;l/=2){
		m += l;
	}
	cout << (m == n ? "YES" : "NO") << endl;
	return 0;
}