C++可以用sort

#include<algorithm>
#include<iostream>
using namespace std;

int main(){
    int n;
    int a[1010];
    cin>>n;
    for (int i=0;i<n;i++){
        cin>>a[i];
    }stable_sort(a,a+n,greater<>());
    cout<<*a;
    return 0;
}