There are 2 mistakes in the task:
Extra, Test 7/7
Wrong result:["golden coin: 30","ruby: 7","silver coin: 140"]
Right result:["golden coin: 30","silver coin: 140","ruby: 7"]
Extra, Test 8/8
Wrong result:["golden coin: 4","ruby: 7"]
Right result:["silver coin: 20","ruby: 7"]
Created at: 2018/09/17 08:44; Updated at: 2018/09/17 09:40
The question is resolved.