12-Hour to 24-Hour
Convert a 12-hour time like 07:05PM to 24-hour HH:MM.
Input: one line in the exact form HH:MM followed by AM or PM (HH is 01–12).
Output: the 24-hour time.
Constraints:
- valid 12-hour time
Sample Tests
Input 1
07:05PM
Output 1
19:05
Input 2
12:00AM
Output 2
00:00
Discussion (opens after you solve — no spoilers before)
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