50pts, 样例过了的……玄关。

alanbecker @ 2024-01-28 23:01:04

#include<bits/stdc++.h>
using namespace std;
int main(){
    double n,a[100];
    double s;
    cin >>n;
    for(int i = 1;i <= n;i++){
        cin >> a[i];
    }
    for(int i = 1;i <= n;i++){
        s += a[i];
    }
    cout << fixed << setprecision(2) << s / n;
    return 0;
}

by alanbecker @ 2024-01-28 23:02:41

重测一次70？（用的是同一个程序）

by cqbzlzm @ 2024-01-28 23:15:33

数组开小了

#include<bits/stdc++.h>
using namespace std;
int main(){
    double n,a[105];
    double s;
    cin >>n;
    for(int i = 1;i <= n;i++){
        cin >> a[i];
    }
    for(int i = 1;i <= n;i++){
        s += a[i];
    }
    cout << fixed << setprecision(2) << s / n;
    return 0;
}