前

方

高

能

预

警

准

备

好

了

吗

#include <bits/stdc++.h>
using namespace std;
int main()
{
    double sum = 0;
    int n, a[200];
    cin >> n;
    for (int i = 1; i <= n; i++)
    {
        cin >> a[i];
        sum += a[i];
    }
    cout << sum << endl << fixed << setprecision(2) << sum / n << endl;
    sort(a + 1, a + n + 1);
    for (int i = n; i >= 1; i--)
    {
        cout << a[i] << " ";
    }
    return 0;
}

现

在

就

让

我

们

享

受

美

食

吧

#include <bits/stdc++.h>
using namespace std;
int main(){
    double n,sum=0,a[150];
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>a[i];
        sum+=a[i];
    }
    cout<<sum<<endl;
    printf("%.2f",sum/n);
    cout<<endl;
    for(int i=n-1;i>-1;i--)cout<<a[i]<<' ';
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int n,a[200],ans;
int main()
{
    cin>>n;
    for (int i=1;i<=n;i++)
    {
        cin>>a[i];
        ans+=a[i];
    }
    sort(a+1,a+n+1);
    cout<<ans<<fixed<<setprecision(2)<<'\n'<<1.0*ans/n<<'\n';
    for (int i=n;i>=1;i--)
        cout<<a[i]<<" ";
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n,a[155];
    double sum=0;
    cin >> n;
    for(int i=1;i<=n;i++)
    {
        cin >> a[i];
        sum+=a[i];
    }
    sort(a+1,a+n+1);
    cout << sum << endl;
    cout << fixed << setprecision(2) << sum/n << endl;
    for(int i=n;i>=1;i--)
    {
        cout << a[i] << " ";
    }
}

#include<bits/stdc++.h>
using namespace std;
int a[160], n, sum, i;
int main()
{
	cin >> n;
	for(i = 1; i <= n; i++){
		cin >> a[i];
		sum += a[i];
	}
	sort(a+1,a+1+n);
	cout << sum << endl;
	printf("%.2f\n",sum*1.0/n);
	for(i = n; i >= 1; i--){
		cout << a[i] << " ";
	}
	return 0;
}