import 'dart:math' as math;

class Darts {
  int score(double x, double y) {
    double distance = math.sqrt(x * x + y * y);
    if (distance <= 1) {
      return 10;
    } else if (distance <= 5) {
      return 5;
    } else if (distance <= 10) {
      return 1;
    }
    return 0;
  }
}