https://practice.geeksforgeeks.org/problems/number-of-ways/0

how can be answer for N=5 is equal to 3?

i think it two only

- all 5 tiles horizontally will give dimension 5*4.
- 4 tiles vertically and 1 tile horizontally will give dimension 5*4;
- but if we use 1 title vertically and 4 tiles horizontally will give dimension 4*5;

they are also considering it as an answer can anyone explain how is the answer 3 for N=5.