How to find the maximum sum of elements of a list with a given minimum distance between them

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I have been looking for a way to find the possible combinations of a list, given a minimal distance of 3 between all the numbers.

Suppose we have

list = [23, 48, 10, 55, 238, 11, 12, 23, 48, 10, 55, 238, 11, 12, 23, 48, 10, 55, 238, 11]

The best possible combination would be 23 + 238 + 238 + 238 = 737.

I've tried parsing the list and selecting each time the max of the split list[i:i+4], like so :

23 -skip three indexes -> max of [238, 11, 12, 23] : 238 -skip three indexes -> max of [48, 10, 55, 238] : 238 skip three indexes -> max of [48, 10, 55, 238] : 238

This worked with this case, but not with other lists where I couldn't compare the skipped indexes.

Any help would be greatly appreciated.



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