aronerben

Set of coin values:   {1, 2, 5, 10}
Target value:         15

Some combinations which all sum up to 15:
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[1, 2, 2, 5, 5]
[5, 10]             [10, 5] is the same solution
[1, 1, 1, 1, 1, 10]
...