[C/C++] Project Euler #31 - Coin Sums
In the UK, the following coin denominations are available:• 1p, 2p, 5p, 10p, 20p, 50p, £1 (100p), £2 (200p).The goal is to find the number of unique combinations of these coins that sum to 200 pence (£2).Conditions:1. Coins can be used repeatedly as needed.2. The order of coins does not matter (e.g., {1p, 2p} is considered the same as {2p, 1p}).3. Only unique combinations should be counted. In t..