gistfile1.txt

#include <stdio.h>

void sort(int *arr, int n)
{
    for (int i = 0; i < n - 1; i++)
    {
        int targetIdx = i;
        for (int j = i + 1; j < n; j++)
        {
            if (targetIdx < arr[j])
                targetIdx = j;
        }

        int temp = arr[targetIdx];
        arr[targetIdx] = arr[i];
        arr[i] = temp;
    }
}

int main()
{
    int n, k;
    scanf("%d %d", &n, &k);

    int arr[n];
    for (int i = 0; i < n; i++)
        scanf("%d", &arr[i]);

    sort(arr, n);

    long long maxSum = 0;
    for (int i = 0; i < k; i++)
    {
        if (arr[i] > 0)
            maxSum += arr[i];
    }

    printf("%lld", maxSum);

    return 0;
}