Chris Angelico於 2018年12月10日星期一 UTC+8下午6時17分14秒寫道： > On Mon, Dec 10, 2018 at 9:11 PM Antoon Pardon <antoon.par...@vub.be> wrote: > > > > On 10/12/18 11:03, Chris Angelico wrote: > > > Considering that, in a problem of that description, neither S nor M > > > may represent zero, I don't think there's a problem here. > > > > Not all such problems have that condition. > > They should. Every published set of problems that I've ever solved by > hand has. I went searching online for some, and found this page: > > http://puzzlepicnic.com/genre?alphametic > > which clearly states that exact restriction. The implication is that > you're solving a puzzle in arithmetic (usually addition or long > multiplication), and it is *exactly* as you would have written it with > digits, save that the digits have been replaced with letters (and > carries have been omitted, since that'd make it too easy). You > wouldn't write a leading zero on a number in standard grade-school > arithmetic, so you also won't use a leading zero in anything here. > > ChrisA
All I know is that when I write a number 03, there is no any human being will say it's an illegal number. I prefer to buy the reason that this restriction was bring in is because of the puzzle's author know it will cause trouble without this, not because of our written habit. --Jach -- https://mail.python.org/mailman/listinfo/python-list
