#include <stdio.h>
#include <stdlib.h>
int compare(const void*a,const void *b) {
return * (int*)a - (int)b;
}
int main() {
    int n,k;
    scanf("%d",&n);
    if (n<=0 || n>10) {
        printf("Invalid Input\n");
        return 0;
    }
    int gems[n];
    for (int i=0;i<n;i++) 
    scanf("%d",gems+i);
    scanf("%d",&k);
    if (k<1 || k>n) {
        printf("Invalid Input\n");
        return 0;
    }
    qsort(gems,n,sizeof(int),compare);
    printf("%d\n",*(gems+k-1));
    return 0;
}