有沒有好辦法?

來源: 2010-10-11 07:55:08 [舊帖] [給我悄悄話] 本文已被閱讀:

The integers a,b,c,d satisfy a>b>c>d and a+b+c+d=2048 and a^2-b^2+c^2-d^2=2048. find the smallest possible value of a.