C0,C1,C2,C3=map(int,input().split())
L,R=map(int,input().split())

def f(x):
    return abs(C0+C1*x+C2*x*x+C3*x*x*x)

ANS=[]
for i in range(10**6+1):
    x=L+(R-L)/(10**6)*i
    ANS.append(f(x))

MIN=min(ANS)
IND=ANS.index(MIN)

MIN=L+(R-L)/(10**6)*(IND-1)
MAX=L+(R-L)/(10**6)*(IND+1)

MIN=max(MIN,L)
MAX=min(MAX,R)

for tt in range(1000):
    mid1=MIN+(MAX-MIN)/3
    mid2=MIN+(MAX-MIN)/3*2

    if f(mid1)<f(mid2):
        MAX=mid2
    else:
        MIN=mid1
    
print(f(MIN+MAX))