Problem
Given a non-negative integer N, print its reverse using recursion.
Input format
Input
input.txt
- A single integer N (0 ≤ N ≤ 100000)
Output format
Output
output.txt
- The reverse of N as an integer (no leading zeros)
Example
input
2040
output
402
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Sample cases (from the problem)
Sample Case 1
Input
2040
Expected output
402
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