I'm using only notepad. 29 lines. Got AC after first sending. :-)

This problem is so easy, so you should not think that all this is because you are a true-coder.

we so proud of you.
better tell what you did for solve that problem except just telling why you awesome, coz it does not make other people happy.

WA#4 was because I didn't count last partially filled line.
WA#10 was because I've got overflow in the following test:
1 3 4
a
aaa
aaa
aaa
Should be 4, but I had 2.