package main

import (
    "fmt"
)

func main() {
    for {
        var l int
        fmt.Scan(&l)
        if l <=0 {
            break
        }
        s := make([]int,0,l)
        for i := 0; i<l;i++{
            var v int
            fmt.Scan(&v)
            s = append(s, v)
        }
        var n int
        fmt.Scan(&n)
        fmt.Println(s[l-n])
    }
}