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