#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)

using namespace std;

int main() {
    int x;
    cin >> x;
    
    double y = sin(x);
    if (y == 0 or y == 1 or y == -1) puts("Yes");
    else puts("No");
    
    return 0;
}