As I said, can you help me to find a problem. I read it on codeforces in a certain time, on another computer, and now I implemented it already, but I cannot find where to submit, no matter how I try.

The problem statement like: The main character have to move from [1, 1] to [n, m] (of a board) and avoid the black cell (there are k of those cell, with coordinates giving in Input).

If you see that problem, please tell me the problem code or the name, maybe anything you can remember.

Thank so much for your reading.

As my previous blog, this blog's only a few feeling and experience. It may not very useful. I just wanna share something like a public diary.

In most of Div. 2 contest, which i took part in, #C of Div. 2 is a hard problem for us to solve, and if I spend about 1 or 1,5 hour for it, I think that OK.

But this time, #A of Div. 1 is the same difficult but it is the most easy problem so I feel very very "Chicken" (A speak way well know in my nation, to refer a bad-skill guy).

And I realize that many thing out side my control, the thing I guess that I have to well-do, but, not, maybe i know that, but it take me a lot of time. I can do it better if I've done more practice before. -> Practice make perfect...

Sorry for my bad English, hope you can understand me.

For a long time, I'd thinked that C.M is the goal of my efforts. But now, it's only the beginning of my next efforts. Nothing're called The End. It's just a new beginning. But, after be C.M, I realy do not know what to do next?!?! Hope after tomorrow contest, I'll know what to do.

It just some words of a newbie's feeling, no think useful, just like a Facebook status, but, hope other newbie may share this feeling with me. Sorry for my bad English.