Kursova2_Stop

import java.util.Scanner;

public class STOP {

    static void generateString(int m, String str) {
        for (int i = 0; i  m; i++) {
            System.out.print(str);
        }
    }

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int n = Integer.parseInt(sc.nextLine());

        generateString(n + 1, .);
        generateString(2  n + 1, _);
        generateString(n + 1, .);
        System.out.println();

        for (int row = 0; row  n; row++) {
            generateString(n - row, .);
            System.out.print();
            generateString(2  n + 2  row - 1, _);
            System.out.print();
            generateString(n - row, .);
            System.out.println();
        }

        System.out.print();
        generateString(2  n - 3, _);
        System.out.print(STOP!);
        generateString(2  n - 3, _);
        System.out.println();

        for (int row = n; row  0; row--) {
            generateString(n - row, .);
            System.out.print();
            generateString(2  n + 2  row - 1, _);
            System.out.print();
            generateString(n - row, .);
            System.out.println();

        }
    }
}