#include <stdio.h>

int main() {
    float a, sum = 0;
    int n = 0;
  //简单题型不需要那么难吧,节约时间和空间复杂度远比算法复杂度好
    while (scanf("%f", &a) != EOF) {
        printf("%.1f ", a);
        sum += a;
        n++;
        if (n == 5) {
            printf("%.1f\n",sum);
            sum = 0;
            n = 0;
        }
    }
    return 0;
}