Solutions to Project Euler
Quanquam nobis in intima naturae mysteria penetrare, indeque veras caussas phaenomenorum agnoscere neutiquam est concessum: tamen evenire potest, ut hypothesis quaedam ficta pluribus phaenomenis explicandis aeque satisfaciat, ac si vera caussa nobis esset perspecta. — Leonhard Euler, Conjectura circa naturam aeris (14 August 1780).
The joy of learning maths is much more profound than just reading off a solution already written. Of course, we do want to offer various ways to solve a problem. But using this code to gain points without doing the hard labour is definitely against the site's guidelines.