#include <bits/stdc++.h>
using namespace std;
int n,k,arr[5000001];
int read(){
    int x=0,f=1;
    char c=getchar();
    while(c>='0' && c<='9')
        x=x*10+c-'0',c=getchar();
    return x*f;
}
int main(){
	n = read();
	k = read();
	for(int i=1;i<=n;i++){
		arr[i] = read();
	}
	sort(arr,arr+n);
	cout<<arr[k+1];
	return 0;
}

#3 #5 WA #1,#2,#3 AC