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

typedef long long ll;

ll mas[1050];

int main() {
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    int n, k; cin >> n >> k;
    for (int i = 0; i < n; i++) cin >> mas[i];
    sort(mas, mas + n, greater<ll>());
    ll s = 0; for (int i = 0; i < k; i++) s += mas[i];
    cout << s << endl;
}