public class Kvadrat {
    public  static  void  main(String banana[]){
        int a = 41;
        for(int j = 0; j < a; j = j + 1) {
            for (int i = 0; i < a; i = i + 1) {
                System.out.print("*");
            }
            System.out.println();
        }
    }
}