#include <bits/stdc++.h>
#pragma comment(linker, "/STACK:64000000")
using namespace std;
const int INF = ((1 << 31) - 1);
const long long LLINF = (((1LL << 63) - 1LL));
const long double EPS = 1e-9;
int f(int R, int r) {
  if (r > R) {
    return 0;
  }
  if (2 * r > R) {
    return 1;
  }
  if (2 * r == R) {
    return 2;
  }
  double sinA = 1.0 * r / (R - r);
  double alpha = 2.0 * asin(sinA);
  double len = 2.0 * M_PI + EPS;
  return len / alpha;
}
int main() {
  int n, R, r;
  cin >> n >> R >> r;
  int m = f(R, r);
  cout << (n <= m ? "YES" : "NO") << endl;
  return 0;
}
