UVa 12468 - Zapping( easy; there are only 4 possibilities)

Link:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3912
Sol:

#include <cstdio>
	#include <algorithm>
	int main()
	{
	int first, second, one, two;
	while (scanf("%d%d", &first, &second), first != -1)
	{
	if (first > second)
	{
	one = first - second;
	two = second + 100 - first;
	}
	else
	{
	one = second - first;
	two = first + 100 - second;
	}
	printf("%d\n", std::min(one, two));
	}
	}