题目1553：时钟

题目：http://ac.jobdu.com/problem.php?pid=1553

/*
 　　分别算出时针和分针的度数，做差之后分几种情况讨论，(-360,-180),[-180,0),[0,180],(180,360).
 */
#include <stdio.h>

int main(){
    int h,m;
    while (~scanf("%d:%d",&h,&m)) {
        double hd,md,mdd;
        hd = (h%12)*30;
        md = m*6;
        mdd = ((double)m)/2;
        double temp = hd + mdd - md;
        //printf("%.2lf %.2lf %.2lf %.2lf\n",hd,md,mdd,temp);
        if(temp > 180)
            printf("%.2lf\n",360 - temp);
        else if (temp < 0 && (temp > -180 || temp == -180) )
            printf("%.2lf\n",-temp);
        else if(temp < -180)
            printf("%.2lf\n",360 + temp);
        else
            printf("%.2lf\n",temp);
    }
    return 0;
}