Implement PSER with MAX variant

p[n−1] = max(p[n] · ρ, p[n−1])
p[n−2] = max(p[n] · ρ^2, p[n−2])
p[n−3] = max(p[n] · ρ^3, p[n−3])

Edited Apr 18, 2020 by Yamada Hiroyuki