import sys
from time import clock
try:
    input=open('c:\inputs\in4_6.txt','r+')
    output=open('out_26_sec4_6.txt','w')
except IOError:
    print "The file does not exist"
memory=0
for row in input:
    n=int(row)
memory=memory+sys.getsizeof(n)
memory=memory+sys.getsizeof(row)
start=clock()
a=n/2
memory=memory+sys.getsizeof(a)
b=-(n/-2)
memory=memory+sys.getsizeof(b)
addition=0
memory=memory+sys.getsizeof(addition)+sys.getsizeof(sum)
if a==b:
    sum=0
else:
    sum=b
b=1+n
addition=addition+1
for i in range(0,a,1):
    sum=sum+b
    addition=addition+1
elapsed=clock()-start
output.write(str(sum)+"\n No of additions are "+str(addition)+"\n No of multipications are 0"+"\n Time consumed is "+ str(elapsed) +" secs ""\n Total memory consumed is "+ str(memory) +" bytes")
input.close()
output.close()