License plate

Time limit 0.1 seconds

Memory limit 64 MiB

International license registration plate car consists of A and B, Arabic numerals, capital letters in Latin alphabet. We assume that to provide a unique number is permitted to use any sequence of letters and numbers. How many different such numbers?

Input data

In a single line through the gap two non-negative integers B and A. Both numbers do not exceed 26.

Output data

Single number - the answer to the problem.

Examples

Input example #1

3 3

Output example #1

17576000

Show problem classification