#include <stdio.h>
 
int score_list[100]; // 最大100個までの点数を格納する配列
int size = 0;        // score_listに格納されている点数の個数
 
void record(int score) {
    // scoreをscore_listに格納し、sizeを更新
    if (size < 100) {
        score_list[size] = score;
        size++;
    } else {
        printf("エラー: 配列がいっぱいです。\n");
    }
}
 
double average(void) {
    // score_listに格納されている点数の平均を計算
    int sum = 0;
    for (int 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;
}
 

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