[Community Puzzle] The fastest


#1

Hi everyone,

I have a problem: in this puzzle I validate every test case but I fail at test1 in validation. I am afraid they are testing the case without input (or I have a mistake I haven’t found) but they are not telling us what to do in the case whithout input: should we print “INVALID” or “00:00:00” or something like that? If someone has a solution or a hint I will gladly take it.

Thanks


#2

Input
4
10:15:46
03:59:10
04:00:08
03:59:09

Output
03:59:09


#3

Thanks,

I’ll try these


#4

I had in fact just a stupid mistake not detected by test case.


#5

I am just wondering why that puzzle is medium level?