#include "stdio.h"
#include "conio.h"
main()
{
int b=0,j=0,q=0,m=0;
float p[100],sum=0;
scanf("%f",p[m]);
while(p[m]>0)
    {sum=sum+p[m];
     if(p[m]>=100) b++;
      else if(p[m]>=90) j++;
        else q++;
     m++;
     scanf("%f",p[m]);
   }
printf("zongfeng=%f   pingfen=%f    person=%d",sum,sum/m,m);
getch();
 }