import sys
from time import clock
myfile = open('in1_4.txt','r')
n = myfile.readline()
n= int(n)
add=0
mem=0
t=0
c1=clock()
#print n
fact = n
#print fact
j=0
k=0
while k<n-1:
    j=0

    i=k
    while i<n-1:
        j=j+fact
        add=add+1
        i=i+1
    fact = j
    k=k+1
#print fact
mem = mem + sys.getsizeof(n) + sys.getsizeof(fact)+sys.getsizeof(k)+sys.getsizeof(j)+sys.getsizeof(c1) + sys.getsizeof(t)
t=clock()-c1
#print str(fact) + "\n"+"ADDITIONNS="+str(add)+','+"TIME="+str(t)+','+"MEMORY="+str(mem)
outfile = open('out_4_sec1_4.txt','w')
outfile.write(str(fact) + "\n"+"ADDITIONNS="+str(add)+','+"TIME="+str(t)+','+"MEMORY="+str(mem))
outfile.close()