Tiered Pricing Calculation

Given pricing tier rules and order information, calculate the total price for the order. Each order contains an item and its quantity. Example rules: 1–10 units at $1 each, 11–20 units at $0.8 each. Requirements: Input format: Rules and order information are constructed in a dictionary, e.g., {"item1": [(1, 10, 1), (11, 20, 0.8)]} for rules, "item1, 15" for order information. Output format: an integer representing the total price of the order. Test Cases Input: item1, 15 pricing_rules = {"item1": [(1, 10, 1), (11, 20, 0.8)]} Output: 13 Example Input item1, 15 pricing_rules = {"item1": [(1, 10, 1), (11, 20, 0.8)]}