010-mth-to-last-element

Mth to last element

Challenge Description:

Write a program which determines the M^th to the last element in a list.

Input sample:

The first argument is a path to a file. The file contains the series of space delimited characters followed by an integer. The integer represents an index in the list (1-based), one per line.

For example:

a b c d 4
e f g h 2

Output sample:

Print to stdout the M^th element from the end of the list, one per line. If the index is larger than the number of elements in the list, ignore that input.

For example:

a
g