I've slightly changed the requirements to make it easier. I've also posted a solution - Please read the attached caveats first.
Thanks for the advises and solution. It looks like your code doesn`t work for me in case that there is more than two numbers for evaluation, I mean 2+3+6=11 - ValueError: invalid literal for int() with base 10: ''
Anyway, I still think this is really too much for "This set of tasks will start from knowing absolutely nothing about programming" :)
And that's what happens when you upload the old version of the code to pastebin. Thanks for the heads up.
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