时钟夹角

#include<iostream>

using namespace std;
int abs(int  x){
return x>0?x:-x;
}
int main(){
float  h,m,h1,m1;
float c;
int T;
cin>>T;
while(T--){
scanf("%f:%f",&h,&m);
h1=h/12*360+m/60*30;
m1=m/60*360;
c=h1-m1;
printf("%.2f\n",c);
}
system ("pause");
return 0;
}