#include <stdio.h>
int main()
{
  int a,b,c,d;
  double A;
  scanf("%d%d%d%d",&a,&b,&c,&d);
  A=(double)((a+b+c+d)/4.0);//强转成double
    printf("Sum = %d\n",a+b+c+d);
  printf("Average = %.2lf",A);
  return 0;}