I wanted to solve Unknown Language Round #4, but came across a weird "bridge operator" behaviour at the end of code line.
As the code is toroidal, next code would loop printing
Also, we can discover, that
0 from the empty stack:
And the next code should print
1 and then loop printing
# makes it to omit
But unfortunately, it loops printing
1. Because somehow codeforces's interpereter can't handle
# crossing the end of code line. Actually, Wikipedia doesn't regulate it, nor Esolang does, but I think it is a bug.
Didn't find support email, so I post it here. Maybe someone would like to comment.