@KirinCupr: just a quick confirmation - you're completely right, the creator of the Kata has defined "input_str" as a constant here, so while we can read its value, we must not change/manipulate it! ... The C++ documentation says about the use of the keyword "const": "an object whose type is 'const-qualified', or a non-mutable subobject of a const object. Such object cannot be modified: attempt to do so directly is a compile-time error ..."

+1 for calculating the average mean (unlike some higher ranked solutions) including "yourPoints" - as indicated in the instructions ...

nice exercise in creating your own methods (with suitable access modifiers etc.) - but regarding the kata at issue definitely an overkill ;-)