?看了n篇题解后感觉没问题啊,为何WA20pts

P5726 【深基4.习9】打分

hanshuzhili @ 2024-07-30 09:42:06

代码奉上:

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    int a[n];
    int maxx=-1,minn=1e9;
    for(int i=0;i<n;i++)
    {
        cin>>a[i];
        maxx=max(maxx,a[i]);
        minn=min(minn,a[i]);
    }
    double s=0.00;
    for(int i=0;i<n;i++)
    {
        if(a[i]!=maxx&&a[i]!=minn)
        {
            s+=a[i];
        }
    }
    printf("%.2lf",s/(n-2));
    return 0;
}

by HFZ20111110 @ 2024-07-30 09:47:19

@hanshuzhili 用sort做

#include<bits/stdc++.h>
using namespace std;
int a[1005];
int n,h;
int main(){
    scanf("%d",&n);
    for(int i=1;i<=n;i++){
        scanf("%d",&a[i]);
        h+=a[i];
    }
    sort(a+1,a+1+n);
    h=h-a[1]-a[n];
    printf("%.2lf\n",h*1.0/(n-2));
    return 0;
}

by HFZ20111110 @ 2024-07-30 09:48:09

@hanshuzhili 如果有用可以给个关注吗?


by zsh_haha @ 2024-07-30 09:49:00

@hanshuzhili

如果有多个评委打出了相同的最高分或最低分,只要减去一个最高分和最低分,你的代码把所有最高分和最低分都减了


by HFZ20111110 @ 2024-07-30 09:49:43

@hanshuzhili 题面说只要去1个最高分和最低分,你这样有多个最高分或最低分就全去了


by zsh_haha @ 2024-07-30 09:51:56

@HFZ20111110

不需要的哦,只要算出和后减一个 maxxminn 最后除以 n-2,这样时间复杂度就是 O(n)


by HFZ20111110 @ 2024-07-30 09:54:40

@zsh_haha 也可以,但是这道题复杂度不会很高


by hanshuzhili @ 2024-07-31 14:41:20

蟹蟹dalao们,已关


|