//Sample38_43.java
class Sample38_43{
    public static void main(String[] args){
      double sei = Math.random() * 7;
      int x = (int)sei;
      System.out.println("x= " + x);
      switch( x ){
        case 0:
        case 5:
        System.out.print("Mega ");
        case 1:
        case 2:
        case 3:
        case 4:
        System.out.println("Evolution!");
        break;
        default:
        System.out.println("Do not evolve...");
        }
        System.out.println("---------------");
    }
}