Discussion @ 1134. Cards @ Timus Online Judge

What's the answer for 2 2 1 1 and 2 2 2 2 ?

Posted by MadPsyentist/Sam 17 Jan 2002 12:20

Yes and no respectively (+)

Posted by shitty.Mishka 17 Jan 2002 14:04

1. 2 2 1 1 - YES
This is such a sequence:
(1;2) and (1;0)
2. 2 2 2 2 - NO
This is impossible because number 2 is written only on one card (2;1)
so it couldn't appear twice.

Good luck!

Thank you :) , at least I understand the problem now.

Posted by MadPsyentist/Sam 17 Jan 2002 18:17

> 1. 2 2 1 1 - YES
> This is such a sequence:
> (1;2) and (1;0)
> 2. 2 2 2 2 - NO
> This is impossible because number 2 is written only on one card (2;1)
> so it couldn't appear twice.
>
> Good luck!
>

Re: Thank you :) , at least I understand the problem now.

Posted by Husan 17 Aug 2008 04:18

please tell me how 2 2 1 1 can be YES.Because if Nick take cards for example that

0 1 reads 1
1 2 reads 1
2 3 reads 2
and he can't write 1 2 and 2 3 and answer must be NO i think

Re: Thank you :) , at least I understand the problem now.

Posted by Mak✭kbtu 7 Jun 2010 18:32

Here the first two numbers are N and M

Discussion of Problem 1134. Cards