#include
#include
using namespace std;
long long number[5000005];
int sequence[5000005];
int main(){
int n,k,x=0;
cin>>n>>k;
for(int a=0;a<n;a++){
cin>>number[a];
}
sort(number,number+n);
//依次排序数组的下标 sequence下标对应number的目标数下标
for(int a=1;a<n;a++){
if(number[a]>number[a-1]){
sequence[x++]=a-1;
}
}
sequence[x]=n-1;
int c=sequence[k];
cout<<number[c];
