Transaction Fee with Status- and Type-specific Rates

Problem: Compute Transaction Fees (Rates by Payment Status and Payment Type) You are given a list of transactions and a fee rate table. Each transaction contains: amount: transaction amount (integer, in the smallest currency unit, e.g., cents) payment_status: payment status (string/enum) payment_type: payment type (string/enum) The fee rate table determines the fee rule by (payment_status, payment_type). For each transaction, compute the fee as: fee = amount * rate_percent + rate_fixed rate_percent is a percentage rate (e.g., 0.029 means 2.9%) rate_fixed is a fixed fee (integer, same unit as amount, e.g., 30 cents) Tasks Implement a function/program that: Computes the fee for each transaction. Returns/prints the sum of fees across all transactions as total_fee. Constraints / Notes amount is a non-negative integer. If a transaction’s (payment_status, payment_type) is not found in the rate table: either raise an error, or apply a default rate (confirm with the interviewer). Amounts/fees must be represented as integers (smallest currency unit). Any rounding rule for percentage calculations (floor/round-to-nearest) should be clarified with the interviewer.