#include <stdio.h>

int main ()
{
  int a = 1;
  int b = 7;
  double c = 2.5;
  double d, e, f;
  d = a/4 + b/4 + c;
  e = a/4 + b/4.+ c;
  f = a/4.+ b/4.+ c;
  printf("%.2lf %.2lf %.2lf\n",
         d, e, f);
  return 0;
}