UVa 10550 - Combination Lock (simple, do as asked)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1491
Lời giải:

#include <iostream>
	using namespace std;
	int main()
	{
	int start, first, second, third;
	scanf("%d %d %d %d", &start, &first, &second, &third);
	while (start || first || second || third)
	{
	printf("%d\n", 1080 + ((start - first + 40) % 40 + (second - first + 40) % 40 + (second - third + 40) % 40) * 9);
	scanf("%d %d %d %d", &start, &first, &second, &third);
	}
	}