#This program is Produced by tnyiu
#This program is used for return average of three number given and congra' if greater than 90

a = float(raw_input("Please enter the first number (0 - 100): ")) 
while a < 0 or a > 100:
    print "\nNumber must between 0 and 100"
    a = float(raw_input("Please enter a number between 0 and 100: "))    

b = float(raw_input("Please enter the second number (0 - 100): "))
while b < 0 or b > 100:
    print "\nNumber must between 0 and 100"
    b = float(raw_input("Please enter a number between 0 and 100: "))

c = float(raw_input("Please enter the third number (0 - 100): "))              
while c < 0 or c > 100:
    print "\nNumber must between 0 and 100"
    c = float(raw_input("Please enter a number between 0 and 100: "))

average = float((a + b + c)/3)
              
print "The average of the three numbers is : ", average

if average > 90:
    print "Congratulation, the average of your three numbers is greater than 90!!"
else:
    print "The average of your three numbers is less than 90."

raw_input("\n\nPress Enter Key to Exit.")