#To find if a given number is a Fibonacci number 

num=int(input("enter a number below 100: "))
num1,num2=0,1
while num1<num:
    num1,num2=num2,num1+num2
if num==num1:
    print("It is a fibonacci number.")
else:
    print("It is not a fibonacci number.")





#To find if a given number is an Amstrong number
num = int(input("enter a number: "))


#finding the number of digits in the entered number

count=0
x1=num

while x1>=1:
    count+=1
    x1//=10

#calculating the amstrong number

x2=num
power=0

for i in range(1,count+1):
    digit=x2%10
    power+=digit**count
    x2=x2//10


if num==power:
    print("It is an amstrong number.")
else:
    print("It is not an amstrong number.")