Hello Codeforces, I'd like to open a discussion about the title.

A judge has a special testing environment, which assumes equal execution time of every instruction (one clock cycle each).

Could you (specifically in C++) take somehow advantage of this testing system property, and write your programs in a style, which generally uses more costly instructions, but fewer of them, as to make it faster in this environment?

And then also, what about things like caching, do they matter in that case?