Due to unpredictable accidents, $The \ Third \ Chang'an \ University \ ACM-ICPC \ Programming \ Competition$ will be postponed for $x$ minutes. We have known that the competition should have started at $12:00$, and the duration of it is $5$ hours. As a participant, you want know when is the ending time.
Please print the ending time in the form of $hh:mm$, $hh$ is the hours with range of $00$ to $24$ and the $mm$ is the minutes with range of $00$ to $59$.