Onсe at three o'clock (MSK) in the morning, I have come on Codeforces and have seen such picture:

Couldn't stop not to make a screen picture.

Do you have any signs linked to competitions, favourite and unloved numbers?

Here some more photos of commands of YarSU from ICPC NEERC semi-final in St.-Petersburg of two last years:

2008. Train SPb-Samara. The zero car.
2009. Trial round. 256 - Science.
2009. The Carnival locker room. Jacket is not found.