Inventory Day

The shop opens with stock, the day brings deliveries (+) and sales (−), and the boss asks about a few items at closing. 🏪

You get opening stock as item:amount pairs, then changes as item:amount pairs (amounts can be negative, items always already in stock), then queries (comma-separated). For each query print <item> <final amount>.

Example:

Input: stock = "apple:10,pear:5", changes = ["apple:-3", "pear:2", "apple:-1"], queries = ["apple", "pear"] Output:

apple 6
pear 7

Apple goes 10 - 3 - 1 = 6, and pear goes 5 + 2 = 7.