#include"stdio.h"
main()
{
    float T[4][7],sum,avg;
    int i,j;
    float f1,*f2;
    clrscr();
    sum=avg=0;
    f1=1.0;
    f2=&f1;
    for(i=0;i<4;i++)
    {
        for(j=0;j<7;j++)
        {
	    scanf("%f",&T[i][j]);
	    sum=sum+T[i][j];
        }
    }
    avg=sum/28;
    printf("The average temperature is %6.2f degree.\n",avg);
}