modules

#import factorial
import fact
c=15
print(fact.f(5),fact.g,fact.c,c,fact.cil(4,5))

def f(n):
    f=1
    while n>1:
        f*=n
        n-=1
    return f

g=65
c=g+39

def cil(a,h):
    import math
    s=2*math.pi*a*h
    return s


from fact import cil, f,g,t
c=15
##print(fact.f(5),fact.g,fact.c,c,fact.cil(4,5))//1-zholy
print(cil(4,5), f(7),c,g,t)//2-zholy

#import fibonacci
##def fib(n):
##    if n==1 or n==2:
##        return 1
##    return fib(n-2)+fib(n-1)


def fib(n):
    fib1=fib2=1
    i=0
    while i<n-2:
        f=fib1+fib2
        fib1=fib2
        fib2=f
        i+=1

##import m
##print(m.fib(int(input('n:'))))

##from m import fib
##print(fib(int(input('n:'))))

import m
print(m.fib(int(input('n:'))))

##from m import fib
##print(fib(int(input('n:'))))

    return fib2


# Fibonacci numbers module

def fib(n):    # write Fibonacci series up to n
    a, b = 0, 1
    while a < n:
        print(a, end=' ')
        a, b = b, a+b
    print()

def fib2(n):   # return Fibonacci series up to n
    result = []
    a, b = 0, 1
    while a < n:
        result.append(a)
        a, b = b, a+b
    return result

##import fact as factorial
##print(factorial.f(8))

##from fact import f as factr
##print(factr(5))

##import fact,m
##print(fact.f(5),m.fib(8))

from fact import*
print(f(5),cil(8,102),g,t)