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problem 1642

Послано Hid@yet_qafqaz 5 май 2010 01:50

what if in one way we can reach , but on opposite way we can't?
for example,what is output for this test?
input:
0 3

Re: problem 1642

Послано Sergey Lazarev (MSU Tashkent) 5 май 2010 10:30

Your test is incorrect, such case is impossible.

It is guaranteed that 1D person will encounter either obstacle or exit point sooner or later regardless of the initial direction.

Re: problem 1642

Послано Hid@yet_qafqaz 5 май 2010 22:12

you mean...such test is not exceed?...or i must output "impossible" when n is equal to

Re: problem 1642

Послано Hid@yet_qafqaz 5 май 2010 22:12

you mean...such test is not exceed?...or i must output "impossible" when n is equal to zero

Re: problem 1642

Послано Sergey Lazarev (MSU Tashkent) 5 май 2010 22:52

There are no such tests.

Re: problem 1642

Послано Hid@yet_qafqaz 5 май 2010 23:45

but what is test 13?i got wrong answer in test 13...