Decimal to Base K
Print N written in base K. For digit values 10–15 use uppercase letters A–F.
Input: one line with two integers N and K.
Output: N in base K.
Constraints:
- 0 ≤ N ≤ 1018
- 2 ≤ K ≤ 16
Sample Tests
Input 1
255 16
Output 1
FF
Input 2
10 2
Output 2
1010
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