import random

C = list(map(int, input().split()))
L, R = map(int, input().split())

def f(x):
    return abs(C[0] + C[1] * x + C[2] * x * x + C[3] * x * x * x)


ans = 1 << 60
for _ in range(10 ** 5):
    x = random.random() * (R - L) + L
    ans = min(ans, f(x))
print(ans)