Thank you Chrono79
1, 1, 1, 3, 3 Should be 1000 
2, 2, 2, 3, 3 Should be 200 
3, 3, 3, 3, 3 Should be 300 
4, 4, 4, 3, 3 Should be 400 
5, 5, 5, 3, 3 Should be 500 
6, 6, 6, 3, 3 Should be 600 
1, 1, 1, 1, 3 Should be 1100 
1, 1, 1, 1, 5 Should be 1150 
2, 4, 4, 5, 4 Should be 450 
3, 4, 5, 3, 3 Should be 350 
1, 5, 1, 3, 4 Should be 250

3, 3, 3, 3, 3 Should be 300

3, 3, 3, 3, 3 Should be 300

test 3, 3, 3, 3, 3 Should be 300

1, 1, 1, 3, 3 Should be 1000 --------------
2, 2, 2, 3, 3 Should be 200 -------------
3, 3, 3, 3, 3 Should be 300 -------------
4, 4, 4, 3, 3 Should be 400 -------------
5, 5, 5, 3, 3 Should be 500 -------------
6, 6, 6, 3, 3 Should be 600 -------------
1, 1, 1, 1, 3 Should be 1100 -------------
1, 1, 1, 1, 5 Should be 1150 -------------
2, 4, 4, 5, 4 Should be 450 -------------
3, 4, 5, 3, 3 Should be 350 -------------
1, 5, 1, 3, 4 Should be 250

Fantastic!

I learned a lot from your solution.

I will base my solution on yours.

I'll implement {length: int/2} for reduce iterations.