Just a heads up: Is it allowed to compress the code and execute it to make it difficult to hack? Example submission Last line is the obfuscated code: exec(decompress(b'\x1f\x8b\x08\x00s\xc2}e\x02\xff..')

It was useful, thanks!

Guys, given a multiset m; does someone know the explanation behind lower_bound(m.begin(), m.end(), x) timing out in E(>2000ms): here, whereas m.lower_bound(x) gives AC with 233ms: here. I feel so frustrated and confused right now.

Good catch there. Also the submission times are highly suspicious. Hopefully they will look into it.