Calculate a Basket Total from Delimited Product Records

Implement `total_price_cents(items)` for a list of product records. Each record has exactly this format: ```text sku|product name|quantity|unit price in cents ``` Return the sum of `quantity * unit price in cents` across all records, as an integer number of cents. For this interface, quantities are whole nonnegative units and prices are nonnegative integer cents. Records are well formed, and fields do not contain the separator character. Each record contributes independently, including records with the same SKU. An empty list has total zero. No discounts, taxes, or rounding are part of this function. ### Examples ```text total_price_cents(["a100|Apple|2|125", "b200|Bread|1|350"]) -> 600 ``` The records contribute 250 cents and 350 cents. ```text total_price_cents(["a100|Apple|1|125", "a100|Apple|3|125", "c300|Cup|0|400"]) -> 500 ``` Both apple records contribute, and a zero-quantity record contributes zero. Use integer arithmetic to preserve the input's cent-based representation. No maximum list size or monetary bound is specified.