#include<stdio.h>

int main() { double chengji1,chengji2,chengji3; scanf("%lf",&chengji1); scanf("%lf",&chengji2); scanf("%lf",&chengji3); double sum,ave; sum = chengji1+chengji2+chengji3; ave = (chengji1+chengji2+chengji3)/3; printf("%.2lf %.2lf",sum,ave); return 0; }