#include<bits/stdc++.h> using namespace std; int n,k,a[999999],ans; int main(){ cin>>n>>k; for(int i=1;i<=n;i++){ cin>>a[i]; if(a[i]<a[i-1]) swap(a[i],a[i-1]); if(a[i]==a[i-1]) k--; } cout<<a[k]<<endl; return 0; }