#include <bits/stdc++.h>
using namespace std;
int a[1001];
int main() {
  int n;
  scanf("%d", &n);
  int m = n;
  int pos = 0;
  int k = 1;
  while (true) {
    if (a[pos] == 0) m--;
    if (m == 0) {
      printf("YES\n");
      return 0;
    }
    a[pos] = 1;
    if (pos == (pos + k) % n) {
      printf("NO\n");
      return 0;
    }
    pos = (pos + k) % n;
    k++;
  }
  return 0;
}
