Discussion @ 1070. Local Time @ Timus Online Judge

Stupid problem... Clarification must be included in problem description!!! Alone 18 Jul 2011 21:45

Why if there is no answer, we should print "5"? It must be included in problem description!!!

Re: Stupid problem... Clarification must be included in problem description!!! S.77 7 Aug 2011 16:35

Not 5, but we should add 30 minutes to difference we seek for. For instance, we've found "2H=9", what is unbelievable, 'cause it contradict the statement. But I increment this to get the even number 10=2*5. Answer: 5 hours.
I still don't know why is it true.

Update. I've just found my mistake. The tests are OK (but method of "increment" also works).

Edited by author 07.08.2011 16:57

Re: Stupid problem... Clarification must be included in problem description!!! Joseph Puh the Battle Bear 8 Aug 2011 12:35

I not used any equations. I bruteforced through all possible differences, and if answer was not found then I was printing "5" (by advices from forum).

Re: Stupid problem... Clarification must be included in problem description!!! Samelyuk Kirill 23 Oct 2013 01:14

Problem description is correct.
Try this test:
01.01 21.59
04.23 09.22

Answer:4
But I think your solution will print 5 because of this condition.
So people who got AC for this problem using this condition solved it incorrectly.

Edited by author 23.10.2013 01:14

Edited by author 23.10.2013 01:14

Re: Stupid problem... Clarification must be included in problem description!!! mouse_wireless2 4 Apr 2018 17:53

I also tried bruteforce and on test 2 my program finds that there is no valid answer.
However, if I just return 5 in case of failure program gets acc. I'd really like to know what test 2 is.

By the way, my program outputs the correct answer on the test above.

Samelyuk Kirill wrote 23 October 2013 01:14

Try this test:
01.01 21.59
04.23 09.22

Answer:4

Discussion of Problem 1070. Local Time