How To Print Sum Of The Series (1+2-3+4-5+6...................n )

#TO FIND THE SUM OF THE SERIES:- 1+2-3+4-5+6...............n

print('THE SERIES:- 1+2-3+4-5+6...............n')

n=int(input('\nEnter the range of the sum of the above series:-'))

x=1

for i in range(2,n+1):

    x=x+((-1)**i)*i

print ('The Sum =',x)



Made By :- 
         Nilay Saraf