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Problem
Given a non-negative integer N and a base B (2 ≤ B ≤ 16), print the base-B representation of N using recursion.
Input format
Input
input.txt
- Two integers: N (0 ≤ N ≤ 10000), B (2 ≤ B ≤ 16)
Output format
Output
output.txt
- The base-B representation of N as a string (using 0-9, A-F for digits ≥10)
Example
input
255 16
output
FF
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Sample cases (from the problem)
Sample Case 1
Input
255 16
Expected output
FF
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