if you are CTO or interested in TECH, here is my Github profile

if not, try to solve this puzzle:

what is the summation of this series: 5+1-1+1-1+1-1+1-1....?

Hint: there is 3 cases only, one of them when it goes to infinity, and the others not.

~~Bye ------ NOTE FOR CTOs: I send this as plain text. I know. I want to do that. ------