Introduction - If you have any usage issues, please Google them yourself
The vendor 1 of source code . vendor can sell 3 kinds of merchandise: The Hamburg and 1 Yuan of hot dog wrap 2 Yuan and double-deck Hamburg 3 Yuan. It is infinite to set up quantity. 2 . vendor promise input 1 Yuan, 2 Yuan and the coin of 5 Yuan. When total currency value is equal to the merchandise unit price of customer needs machine send the merchandise of needs, if is larger than , machine will remain currency except offering the merchandise needed to quit Quit the coin of customer input if being smaller than , design it 1 Yuan and 2 Yuan seek 0 coins infinite.