#include <stdio.h>

int main(void) {
	
	int height = 5;
	
	for ( int i =  0 ; i <  height ; i ++ ) {
		
		for(int j = 0; j < height / 2; j++)
		printf(" ");
		
		for(int j = i; j > 0; j--)
			printf("%d", j);
		
		for ( int j = 0 ; j <= i ; j ++ )
			printf("%d", j);
		
		printf("\n");
	}
		
	return 0;
}