CodeforcesRound#227(Div.2)A.GeorgeandSleep
2020-11-09
来源：星星旅游
Note In the first sample George went to bed at 00:06 . Note that you should print the time only in the format 00:06 . That's why answers 0:06 , 00:6 and others will be considered incorrect. In the second sample, George went to bed yesterda
Note
In the first sample George went to bed at "00:06". Note that you should print the time only in the format "00:06". That's why answers "0:06", "00:6" and others will be considered incorrect.
In the second sample, George went to bed yesterday.
In the third sample, George didn't do to bed at all.