uva579-简单计算题

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

int main()
{
	
	while (true)
	{
		int h, m;
		scanf("%d:%d", &h, &m);
		if(h == 0 && m == 0)
			return 0;
		double mm = m * 6;
		//为什么是0.5 (m*6)*(1/12)
		//1/12,分钟走360度,时钟走30度
		double hh = h * 30 + m * 0.5;
		double d = hh - mm;
		if(d < 0)
		{
			d = d + 360;
		}
		if(d > 180)
		{
			d = 360 - d;
		}
		printf("%.3f\n", d);
	}
	return 0;
}