#include <stdio.h>

int score_list[100];
int size = 0;

void record(int score){
    score_list[size] = score;
    size++;
}

double average(){
    int i;
    int sum = 0;

    for(i = 0; i < size; i++){
        sum += score_list[i];
    }

    return (double)sum / size;
}

int main(void){
    int i, score;
    for(i = 0; i < 5; i++){
        scanf("%d", &score);
        printf("%d人目：%d点\n", i+1, score);
        record(score);
    }
    printf("平均点：%lf点\n", average());
    return 0;
}