View Code of Problem 3689

#include <stdio.h>
int main()
{
	int T;
	long A, B;
    scanf("%d", &T);
	for(int i = 0; i < T; i++)
	{
		scanf("%ld\n%ld", &A, &B);
		printf("Case #%d:\n%ld\n", i + 1, A - B);
	}
	return 0;
}