Your definition of w and h is int, and w*h may beyond the range of int. That's what I thought. Wish this could help you.

I think it's because you made operations so many times. Please makesure that the operation time is not more than 100.

Wow, thank you so much !

This competition is very innovative ， and I believe that as long as we work together, we will be able to defeat the virus one day. Let's work together to eliminate the virus！

Although it's div4, I still think it's very difficult. Maybe I'm too bad.

Thank you so much，mogul!

Actually, I am a Chinese man lives on the mainland. Nice to see you~ 我们都是一家人

No matter what happend, I will still love the Codeforces. Thank you, the CF. I will cheer on you. P.S.:In my country, it's called "add oil"(加油). I love this website.

Actually , you can still submit it if you want.

^-^

Having a picture with coordinates may help you solve E problem （做了一张有坐标的图片，可能会帮助你解答E题）

May not. I think it's just a general idea so that almost every contest could use this template. ^-^

Wish Codeforces could be better and better.

I also can't understand what does B means,with my not-so-good English^-^