Widenyo:Experience

素質 The amount of experience each character needs to level up depends on their "quality" stat, which may be A,B,C,D, or X.

Additionally, due to rounding issues, it is cheaper to level up the characters one level at a time instead of multiple levels at once (except for quality B, where the cost is the same).

The quick formula to calculate experience needed to go from L-1 to L is $$EXP = FLOOR( (L-1) * R)$$ where R is the experience rate:

The quick formula to approximate jumping multiple levels (from S to L) is $$EXP =FLOOR(((L-1)+(S-1))*(L-S)*R/2))$$. This formula works for A~D, but for quality X it over-estimates the experience necessary by 1 point on a few random levels.

The following table compares the amount needed to advance to level L via different methods:
 * + denotes going from L-1 to L
 * * denotes the cumulative amount of experience needed going from level 1 to L advancing one level at a time
 * ! denotes the total amount of experience needed going from level 1 to L in a single boost