C++代码

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int a[1000010], n, m;
int main()
{
cin >> n >> m;
for( int i = 1; i <= n; i++ )cin >> a[i];
sort( a + 1, a + 1 + n, [&]( int A, int B ){return A > B;});
for( int i = 1; i <= m; i++ )cout << a[i] << ' ';
cout << endl;
return 0;
}