import sys
import time
f=open("c:\inputs\in4_6.txt","r")
f1=open("out_3_sec4_6.txt","w")
add=0
start=time.clock()
n=int(f.readline())
num=0
sum=0
while num < n:
           num += 1
           sum+=num
           add=add+1
el=time.clock()-start           
total=sys.getsizeof(sum)+sys.getsizeof(num)+sys.getsizeof(el)
f1.write(str(sum)+"\ntime "+str(el)+"\nadditions "+str(add))
f.close()
f1.close()