I write this code for BMI calculator. It doesn't work. Why?

Question

hight = float(input())
weight = float(input())
bmi = print (weight / ((hight)**))
if bmi<=19:
print ("underweight")
elif bmi>=19 and bmi<25:
print ("normal")
elif bmi>=25 and bmi<30:
print ("overweight")
elif bmi>30:
print ("obesity")
print ("thanks")

Answer 1

weight = float(input())
hight = float(input())

bmi = (weight / ((hight)**2))
if bmi<=18.5:
print ("Underweight")
elif bmi>=18.5 and bmi<25:
print ("Normal")
elif bmi>=25 and bmi<30:
print ("Overweight")
elif bmi>=30:
print ("Obesity")
#print ("thanks")

Answer 2

Ok sir I get my mistake

Answer 3

But, after that, I give this code:

weight = float(int())
hight = float(int())

bmi = (weight / ((hight)**2))
if bmi<18.5:
print ("Underweight")
elif bmi>=18.5 and bmi<25:
print ("Normal")
elif bmi>=25 and bmi<30:
print ("Overweight")
elif bmi>30:
print ("Obesity")
#print ("Thanks")

What is the problem now?