public class Solution { public static void main(String[] args) { int a = 1; while (a <= 10) { int b = 1; while (b <= 20) { if (a == 1 || a == 10) { System.out.print("Б"); } else if (b == 1 || b == 20) { System.out.print("Б"); } else { System.out.print(" "); } b++; } System.out.println(); } a++;