*X, Y: Constant Number set by Dev *Steps: number of steps that users can take within 40 minutes. *Bonus: each sneaker type has a different bonus point. *Efficiency, reliability: the higher the rare level is, the higher the efficiency and reliability are. *Optimization Rate: the value will be 1 when the steps counted in 40 minutes are within the allowable range of each sneaker type. If the steps are under the minimum or over the maximum, the value will be gradually deducted.