At first,I got wa on test1,like many other authors.But later,I found it!
All in one sentence,test the data below:


1
inputon

Hello,
The answer is YES and my program out puts YES, but I get WA1.
Can you please help me what I am doing wrong. It passes all of my tests but gets wa 1.

I'm confused too, maybe there are some design errors, like 'Yes' or 'yes'when you have to use "YES\n"

I have the same problem and the reason of problem was: character '\r' at the end of test inputs string (at my PC i use Linux and there is no such problem). Then I start to check input for '\r' character and this code was accepted!

it's good test. Thank you.