#include<stdio.h>
int main() {
    int n, k;
    scanf("%d", &n);
    
    if (n <= 0 || n > 10 {
        printf("Invalid Input");
        return 0;
    }
    int a[n];
    for (int i = 0; i < n; i++)
    scanf("%d", &a[i]);
    scanf("%d", &k);
    if (k <= 0|| k > n) {
        printf("Invalid Input");
        return 0;
    }
    for (int i = 0; i < n - 1); i++)
     for (int j = i + 1; j < n); j++)
     if (*(a + j)< *(a + i)) {
         int t = *(a + i);
         *(a + i) = *(a + j);
         *(a + j) = t;
     }
     printf("%d", *(a + k - 1));
     return 0;
}