Bill split pennies

Split a restaurant bill between friends so that every cent is accounted for.

All money is in whole cents. The bill is settled like this:

1. The tip is tip_percent percent of subtotal, rounded to the nearest cent, with a half cent rounded up (for example a tip of 162.5 cents becomes 163). The tip is worked out on the full subtotal, before the voucher.
2. The total to pay is subtotal + tip - voucher. A voucher can wipe out the whole bill but never produce a refund, so a negative total becomes 0.
3. The total is shared among diners people as evenly as whole cents allow. Everyone pays the same base amount, rounded down, and the leftover cents are handed out one cent each to the first payers in order: person 0 pays an extra cent, then person 1, and so on, until the leftover cents run out. No one ever pays more than one extra cent.

Input:

• subtotal: the food and drink total in cents.
• tip_percent: the tip percentage, a whole number.
• voucher: the value in cents of a discount voucher, possibly 0.
• diners: the number of people sharing the bill.

Output: a list of diners integers, the amount in cents each person pays, in order. Its sum equals the total to pay.