#include <bits/stdc++.h>
using namespace std;
const int MOD = 1e9 + 7;
const int mod = 998244353;
const double pi = 4 * atan(1);
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  double R, r;
  cin >> R >> r;
  if (R < r) {
    cout << "NO";
    return 0;
  }
  if (R == r) {
    if (n == 1) {
      cout << "YES";
      return 0;
    } else {
      cout << "NO";
      return 0;
    }
  }
  if (r <= R - r) {
    double t = 2 * ((acos(r / (R - r)) * 180 / pi));
    double ans = (double)360 / (180 - t);
    if (ans >= n)
      cout << "YES";
    else
      cout << "NO";
  } else {
    if (n == 1)
      cout << "YES";
    else
      cout << "NO";
  }
  return 0;
}
