/*
TASK:crossing
LANG:C++
*/
#include<iostream.h>
float w,s,a,b,t,l,g,sum;
long h,m,sec;
int main()
{ cin>>w>>s>>a>>b;
sum=w/a+s/b;
h=sum;
m=((sum-h)*60);
sec=((sum-h-m/60)*360);
cout<<h<<" : "<<m<<" : "<<sec<<endl;
return 0;
}
