Unable to understand problem

#1

Can you please explain what data is in sample input?

#2

A tile can either be placed horizontally or vertically.
Input : n = 2, m = 3
Output : 1
Only one combination to place
two tiles of size 1 x 3 horizontally
on the floor of size 2 x 3.

Input : n = 4, m = 4
Output : 2
1st combination:
All tiles are placed horizontally
2nd combination:
All tiles are placed vertically.

#3

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