import java.util.*;

class Methods {
	public static void main(String[] args){
		//int [] array = generateRandomArray(5);
		//print(array);
		boolean [][] array = new boolean[4][4];
		for(int i = 0; i < 4; i++) {
			for(int j = 0; j < 4; j++) {
				System.out.print(array[i][j]);
			}
			System.out.println();
		}
	}

	static void print(int[] array){
		for(int i = 0; i < array.length; i++) {
			System.out.println(array[i]);
		}
	}

	static int[] generateRandomArray(int size) {
		int[] array = new int[size];
		Random random = new Random();
		for(int i = 0; i < array.length; i++){
			array[i] = random.nextInt(10);
		}

		return array;
	}
}