#include <bits/stdc++.h>
using namespace std;
int main() {
int T;
cin>>T;
while(T--){
int n,k;
cin>>n>>k;
vector<int> v(n);
for(int i=0;i<n;i++){
cin>>v[i];
}
sort(v.begin(),v.end());
cout<<v[k-1]<<"\n";
}
return 0;
}
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