So I read Irodov was the best prep for the Physics Olympiad, but what if I'm in Physics B and just completed a semester's worth of mechanics? I'm currently in Pre-Calculus if that matters. Another thread I read says most problems can be solved using differential eqs. but neither my current Physics or Pre-Cal class have touched that yet. Will I have to learn Calculus all on my own in the span of 2 weeks if I have any hope of doing well on the Olympiad?