import sys 
import time
t1=time.clock()
count_mul=0
def factorial(n) :
     if n <= 1 : return 1
     return n*factorial(n-1)

product=1
factr = open("in1_10.txt")
buff=factr.read()
x=int(buff)
for i in range(1, x+1):
    product *= factorial(i)
    count_mul=count_mul+i
    
factw = file("out_20_1_10.txt",'w')     
print >>factw, product
factw.write('\n total no of multiplications is'+" "+ str(count_mul)+ '\n')
t2=time.clock()
factw.write('time taken is'+" "+ str(t2-t1)+ '\n')
factw.write('memory taken'+" "+ str(sys.getsizeof(factorial)+sys.getsizeof(product))+'\n')
factw.close()