Stage n can be thought of as time period n . As usual, n is the stage number. The values r needing consideration can of course be restricted to integer values between 0 and 50- n . At the beginning of time period n you must decide the quantity d of money units to be devoted to lobbying the legislature in stage n . The legislature of stage n decides whether or not to vote for ratification.
Donors decide how much to contribute to the organization during stage n .