Spongebob fails at counting. He has a list of numbers but only wants to know the value of the xth number.
Input
The first line of input is a 2 integer, n and x.
n represents the number of numbers in the list and 0 ≤ n ≤ 50000.
x is the position of the number spongebob wants to know.
The following line contains n space-separated numbers.
Output
Print the xth number in the list Spongebob has.
Sample Input
5 2
1 4 6 2 9
Sample Output
4