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

int main(void)
{
	const int n = 5;
	int a[n][n];

	srand(time(NULL));
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			a[i][j] = rand() % 1000;
			printf("%d ", a[i][j]);
		}
		printf("\n");
	}
	printf("\n");

	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			if (i == j) a[i][j] = i+1;
			printf("%d ", a[i][j]);
		}
		printf("\n");
	}

	return 0;
}