import java.util.Random;
import java.util.Scanner;

public class BattleShip {

	public static void main(String[] args) {

		        Scanner input = new Scanner(System.in);

		        System.out.println("Enemy Warship spotted on the horizon.");
		        String[] dots = new String[] { "~", "~", "~", "~", "~", "~", "~", "~", "~", "~", " ~", " ~", " ~", " ~", " ~", " ~", " ~", " ~", " ~", " ~"};

		        Random r = new Random();
		        int ship = r.nextInt(20);

		        for (int HP = 10; HP >= 0; HP--) {
		        	for (int i = 0; i < dots.length; i++); {
					int i = 0;
					System.out.print(dots[i] + " ");
		        }

		        System.out.println();
		        System.out.println("0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19");
		        System.out.println();
		        System.out.println();
		        System.out.println("Health: " + HP);
		        System.out.println();
		        System.out.println("Choose location to Attack!!: ");
		        int attack = input.nextInt();
		        if (attack == ship) {
		        	System.out.println("You Win");
		        	break;
		        }else {
		        	dots[attack] = "X";
		        	if (HP == 0) {
		        		System.out.println("You Lose!!");
		        	}
		        }}}}