UVA 488 Triangle Wave

#include <cstdio>

int main() {
	int t;
	scanf("%d", &t);
	while (t--) {
		int len, num; 
		scanf("%d%d", &len, &num);
		while (num--) {
			for (int j = 0; j < len; j++) {
				for (int k = 0; k <= j; k++)
					printf("%d", j + 1);
				printf("\n");
			}
			for (int j = len - 1; j > 0; j--) {
				for (int k = 0; k < j; k++)
					printf("%d", j);
				printf("\n");
			}
			if (num)
				printf("\n");
		}
		if (t)	
			printf("\n");
	}

	return 0;
}

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