a = input()
b = input()
c = input()
toal = a.split()
b_sort = b.split()
c_sort = c.split()
N = int(toal[0])
J,K = int(toal[1]),int(toal[2])
A_J,B_J,T_J = int(b_sort[0]) ,int(b_sort[1]),int(b_sort[2])
A_k,B_k,T_k = int(c_sort[0]) ,int(c_sort[1]),int(c_sort[2])
sum_sort = (J*K)**N
J,K = J-T_J,K-T_k
A_J,B_J,A_k,B_k = A_J-T_J,B_J-T_J,A_k-T_k,B_k-T_k
sum1_sort = (J*K)**N
P1 = sum1_sort/sum_sort
p2  = ((J-A_J)*(K-A_k))**N
P3 = ((K-B_k)*(J-B_J))**N
P4 = (p2/sum1_sort)*(P3/sum1_sort)
p5 = P4*P1 print(p5)