#include <bits/stdc++.h>
using namespace std;
const double pi = 3.141592653589793;
const double epsilon = 1e-6;
using namespace std;
int n;
double R, r;
int main(int argc, const char* argv[]) {
  ios_base::sync_with_stdio(0);
  cin.tie(NULL);
  cin >> n >> R >> r;
  double angle = asin(r / (R - r)) * 2;
  int nPlates = ((2 * pi) / angle) + epsilon;
  if (r > R)
    cout << "NO\n";
  else if (r > R / 2)
    cout << ((n > 1) ? "NO\n" : "YES\n");
  else if (nPlates < n)
    cout << "NO\n";
  else
    cout << "YES\n";
  return 0;
}
