/*

 *PAT IO-02 整数四则运算

 *2015.7.30

 *作者:flx413

 */

 #include<stdio.h>

 int main()

 {

     int a[], sum;

     float average;

     scanf("%d%d%d%d", &a[], &a[], &a[], &a[]);

     sum = a[] + a[] + a[] + a[];

     average = sum / 4.0;

     printf("Sum = %d; Average = %.1f", sum, average);

     return ;

 }