# your code goes here
t = "12/20/2014 15:25:05 pm"
hrs = int( t.split()[1][:2] )
if hrs > 12:
t = t.replace( str(hrs), str(hrs-12) )
# split() breaks t by spaces. [1] chooses the "15:25:05" part. And [:2] gets the "15"
print(t)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCgp0ID0gIjEyLzIwLzIwMTQgMTU6MjU6MDUgcG0iCgpocnMgPSBpbnQoIHQuc3BsaXQoKVsxXVs6Ml0gKQoKaWYgaHJzID4gMTI6CiAgICB0ID0gdC5yZXBsYWNlKCBzdHIoaHJzKSwgc3RyKGhycy0xMikgKQoJIyBzcGxpdCgpIGJyZWFrcyB0IGJ5IHNwYWNlcy4gWzFdIGNob29zZXMgdGhlICIxNToyNTowNSIgcGFydC4gQW5kIFs6Ml0gZ2V0cyB0aGUgIjE1IgoJCnByaW50KHQp