Problem
Implement a stack using an array and reverse the stack contents.
Input (from file `input.txt`):
- First line: integer N (1 β€ N β€ 1000)
- Second line: N integers (stack elements from bottom to top)
Output (to file `output.txt`):
- Stack elements from top to bottom (reversed input)
Example
input.txt:
4
10 20 30 40
output.txt:
40 30 20 10
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