#include<stdio.h>
int main(){
    int n,k,itr,ind;
    
    scanf("%d",&n);
    if(size<=0){
        printf("Invalid Input");
    }
    int arr[n];
    for(ind=0;ind<n;scanf("%d",&arr[ind++]));
    scanf("%d",&k);
    if(k<1 || k>n){
        printf("Invalid Input");
        return 0;
    }
    for(itr=1;itr<size;itr++){
        for(ind=0;ind<size-itr;ind++){
            if(arr[ind]>arr[ind+1]){
                arr[ind]=(arr[ind]+arr[ind+1])-(arr[ind+1]=arr[ind]));
            }
        }
    }
    printf("%d",arr[k-1]);
    return 0;
}