What does this equation mean?

HP uses the same inner term but a different outer shell, adding the Pokémon’s level plus ten instead of multiplying by a nature: $\text{HP} = \left\lfloor (2B+I+\lfloor E/4 \rfloor) \cdot \frac{L}{100} \right\rfloor + L + 10$. At level 100 — the level Smogon’s singles tiers, including the OU tier this article draws its spreads from, are actually played at — the level term collapses to a clean multiplication by one, so every floor operation inside the level scaling vanishes and the formula reduces to simple integer arithmetic: raw score equals twice the base stat plus the IV plus the floor of EV over four, plus five, times the nature coefficient. That collapse is not incidental to this article; it is why the whole problem is exactly solvable rather than merely well-approximated. A trainer is not tuning a continuous dial. A trainer is allocating a strictly rationed resource — at most 510 points total, at most 252 in any single stat since Generation VI [ 2 ] — against a fixed, integer-valued conversion rate, in six independent lines, one of which the nature coefficient tilts by exactly ten percent in one direction and discounts by exactly ten percent in another [ 3 ] . Two Pokémon-standard six-stat lines, one budget, hard per-line ceilings, an unambiguous conversion technology: that is a textbook constrained-allocation problem, not a metaphor borrowed from economics to dress up a hobby.