Hello Codeforces!

Recently, in one of my classes, I came across an interesting problem involving segment trees. After solving it, I really wanted to get it accepted on an online judge, so I asked the instructor, “Where can I submit this problem?”

And as you can probably guess, he said there wasn’t any judge for it.

That was frustrating, so I decided to set up a judge for the problem myself. It turned out to be an interesting—if slightly painful—experience.

Once it was ready, I thought, why not share it with others? So I decided to post the invitation link here.

Hope you find it useful: https://mirror.codeforces.com/contestInvitation/2a8c496c6fafa05b1f0dca1c3ef9ddc19c01a889