PHAN TU NHO THU K

#include <iostream>
#include <cmath>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
void Sort(int arr[], int n){
    for(int i = 0; i < n - 1; i++){
        for(int j = i + 1; j < n; j++){
            if(arr[i]>arr[j]){
                int temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;
            }
        }
    }
}
int main(){
    int t;
    cin >> t;
    while(t--){
        int n, k;
        cin >> n >> k;
        int arr[n];
        for(int i = 0 ; i < n; i++){
            cin >> arr[i];
        }
        sort(arr, arr+n); // Version 1
        Sort(arr, n); // Version 2
        cout << arr[k-1] << endl;
    }
}