#include <stdio.h>
int main() {
    int N, K;
    scanf("%d", &N);
    if (N <= 0) {
        printf("Invalid Input");
        return 0;
    }
    int arr[N];
    for (int i =0; i < N; i++) {
        scanf("%d", &arr[i]);
    }
    scanf("%d", &k);
    if (k < 1 || k > N) {
        printf("Invalid Input");
        return 0;
    }
    for (int i =0; i < N - 1; i++) {
        for (int j = i + 1; J < N; j++) {
            if (arr[j] < arr[i]) {
                int tem = arr[i];
                arr[i] = arr[j];
                arr[j] = tem;
            }
        }
    }
    printf("%d",arr[k - 1]);
    return 0;
}