import numpy as np
from scipy.optimize import minimize_scalar, shgo, minimize

c0, c1, c2, c3 = map(int, input().split())
l, r = map(int, input().split())

def f(x):
    return abs(c0 + c1 * x + c2 * x**2 + c3 * x**3)

res = minimize_scalar(f, bounds=(l, r), method="bounded")
print('{:f}'.format(res.fun))