#text book p3-17

import math

r=eval(input('Enter the radius:'))
area=r*r*math.pi
p=2*math.pi*r
print('Area=%.2f' % (area), f" per={p}")

#text book p3-19
n1,n2,n3=eval(input('enter 3 number sep by ,'))

tot=n1+n2+n3
print(f"{n1}+{n2}+{n3}={tot}")

#p3-26ex9
s=input("input 5 numbers sep with space: ")

#n1, n2, n3, n4, n5=s.split(',')
n1, n2, n3, n4, n5=s.split()

sum=eval(n1) + eval(n2) + eval(n3) + eval(n4) + eval(n5)
avg=sum/5
print ("sum = %s" % sum, "avg = %s" % avg)


# cp's comment
# diff between 
# import random
# and 
# from random import random
# random.random() or random()

#!/usr/local/bin/python
from random import random

tar=int(random() * 100 % 3)

i=int(eval(input('number: ')))

if (i == tar) :
 print("bingo\n")
else :
 print("miss\n")
 print("tar=%d" % tar)

# exercise 1
# cal BMI
# BMI = mass / h^2  (kg/m^2)
# 72.57 / (1.78)^2 = 22.9 kg/m^2
# https://www.calculator.net/bmi-calculator.html


#ex2.py example
from random import random

tar1=int(random() * 100 % 10)
tar2=int(random() * 100 % 10)
tar3=int(random() * 100 % 10)

print(f" {tar1} {tar2} {tar3}")

i=int(eval(input('number: ')))

if (i == tar1) :
 print("bingo1")
else :
 if (i == tar2) :
  print("bingo2")
 else :
  if (i == tar3) :
   print("bingo3")
  else :
   print("miss\n")