arr_time=float(input("Enter the mean inter arrival time of objects from Feeder (in secs): "))
ser_time1=float(input("Enter the mean  inter service time of Lathe Machine 1 (in secs) :  "))
ser_time2=float(input("Enter the mean  inter service time of Lathe Machine 2 (in secs) :  "))
ser_time3=float(input("Enter the mean  inter service time of Lathe Machine 3 (in secs) :  "))
Robot_time=float(input("Enter the Additional time taken for the Robot (in secs) :  "))
lam=1/arr_time
mu1=1/(ser_time1+Robot_time)
mu2=1/(ser_time2+Robot_time)
mu3=1/(ser_time3+Robot_time)
print("-----------------------------------------------------------------------")
print("Series Queues with infinite capacity- Open Jackson Network")
print("-----------------------------------------------------------------------")
if (lam <  mu1) and (lam <  mu2) and (lam <  mu3):
    Ls1=lam/(mu1-lam)
    Ls2=lam/(mu2-lam)
    Ls3=lam/(mu3-lam)
    Ls=Ls1+Ls2+Ls3
    Lq1=Ls1-lam/mu1
    Lq2=Ls2-lam/mu2
    Lq3=Ls3-lam/mu3
    Wq1=Lq1/lam
    Wq2=Lq2/lam
    Wq3=Lq3/lam
    Ws=Ls/(3*lam)
    print("Average number of objects in the system S1 : %0.2f "%Ls1)
    print("Average number of objects in the system S2 : %0.2f "%Ls2)
    print("Average number of objects in the system S3 : %0.2f "%Ls3)
    print("Average number of objects in the overall system    : %0.2f "%Ls)
    print("Average number of objects in the conveyor S1  :  %0.2f "%Lq1)
    print("Average number of objects in the conveyor S2  :  %0.2f "%Lq2)
    print("Average number of objects in the conveyor S3  :  %0.2f "%Lq3)
    print("Average waiting time of an object in the conveyor S1 : %0.2f secs"%Wq1)
    print("Average waiting time of an object in the conveyor S2 : %0.2f secs"%Wq2)
    print("Average waiting time of an object in the conveyor S3 : %0.2f secs"%Wq3)
else:
    print("Warning! Objects Over flow will happen in the conveyor")
print("----------------------------------------------------------------------")