Player rating for tournaments across all installments of Heroes.

Stage for the second round - 5 participants (example: AmberaSolera):

1st option:
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4. 48 days - 100*8/48=17 points=20 points (minimum for a game)
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2nd option:
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4. 48 days - 100-80/(N-1)*(R-1)=40 points
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3rd option:
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4. 28.5 points
...

Probably, the third option would be the most correct way to calculate it (I did the calculation for the BB tournament based on this). Rounding to 20 should only be done at the very end, and during the calculation process - no rounding.