#include <stdio.h>
#include <stdlib.h>
#include <time.h>

main() {
	int mas[12], a, b, c, i;
	scanf("%d %d", &a, &b);

	for (i = 0; i < 12; i++) {
		srand(clock()+i);
		c = rand() % (b - a + 1);
		mas[i] = c + a;
	}
	printf("--------------------------------\n");
	printf("index:  ");
	for (i = 0; i < 6; i++) {
		printf ("\t%3d", i+1);
	}
	printf("\n");
	printf("element:");
	for (i = 0; i < 6; i++) {
		printf ("\t%3d", mas[i]);
	}
	printf("\n--------------------------------\n");
	printf("index:  ");
	for (i = 6; i < 12; i++) {
		printf ("\t%3d", i+1);
	}
	printf("\n");
	printf("element:");
	for (i = 6; i < 12; i++) {
		printf ("\t%3d", mas[i]);
	}
	printf("\n--------------------------------\n");
}