Subscription family-seat allocation calculator

Calculate minimum feasible purchase cost and purchased plans and seat assignments with your own figures.

Your numbers

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Use minimum feasible purchase cost and purchased plans and seat assignments to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

JSON Member IDs
["A","B","C"]
JSON Plan offers [ID,seat capacity,price currency,permitted sharing groups of member IDs] (USD)
[["single",1,8,[["A"],["B"],["C"]]],["family",3,20,[["A","B","C"]]]]
Minimum feasible purchase cost (USD)
$20.00
Purchased plans and seat assignments
[["family",["A","B","C"]]]
Unserved member IDs
[]

Try another scenario

JSON Member IDs
["A","B","C"]
JSON Plan offers [ID,seat capacity,price currency,permitted sharing groups of member IDs] (USD)
[["single",1,8,[["A"],["B"],["C"]]],["family",3,25,[["A","B","C"]]]]
Minimum feasible purchase cost (USD)
$24.00
Purchased plans and seat assignments
[["single",["A"]],["single",["B"]],["single",["C"]]]
Unserved member IDs
[]
Calculation method

Calculation method

Minimum feasible purchase cost (USD)

Exact subset dynamic programming on covered-member bit masks with repeatable plan offers; minimize total cost.

Purchased plans and seat assignments

Return plan ID plus newly assigned members per purchase; equal-cost paths choose lexical serialized assignment.

Unserved member IDs

Empty for full feasible coverage; otherwise best cardinality coverage then minimum cost, explicit infeasibility.

Symbols and units
a
JSON Member IDs
b
JSON Plan offers [ID,seat capacity,price currency,permitted sharing groups of member IDs] (USD)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Exact minimum-cost plan-and-seat allocation among supplied sharing-compatible member groups. Multiple purchases allowed; every plan purchase selects one allowed sharing group subset within seat capacity. Supported limits: 1–10 distinct members, 1–8 offers, positive capacities and nonnegative finite prices. Groups only contain declared unique members.
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