送交者: mangolasi 于 2006-3-04, 13:28:05:

回答: hmm, not a general formula yet, but for the first step: 由 mangolasi 于 2006-3-04, 13:22:15:

is 1 larger than the # remain. Like in 11, stop taking away when you need to take 6 out of 11 (i.e. 5 remains).

加跟贴