UVa 488 - Triangle Wave

// UVa 488 - Triangle Wave

#include <iostream>
#include <stdio.h>
using namespace std;

int main() {

	int t;
	for (cin >> t; t; t--) {
		int a, f;
		cin >> a >> f;

		for (int ff = 1; ff <= f; ff++) {

			for (int i = 1; i <= a; i++) {
				for (int j = 0; j < i; j++)
					printf("%d", i);
				printf("\n");
			}
			for (int i = a - 1; i >= 1; i--) {
				for (int j = 0; j < i; j++)
					printf("%d", i);
				printf("\n");
			}
			if (ff < f)
				printf("\n");
		}

		if (t > 1)
			printf("\n");
	}

	return 0;
}