std = input("Enter the student Name :")
if std=="khan" or std==1:
    print("enter room no. 1")
    #if std==1:
    #    print ("your hostel ")
elif std=="yadav":
    print("room no. 2")
elif std=="john":
    print("room no 3")
else:
    print("invalid Name")
print("all set...")