In English：

来源: 于 2014-02-03 08:38:16 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
For given whole number m and n, how many whole number pairs (x,y) are there such that:
x <= m

 

 

y <= n

 

 

my > nx - n

 

 

my < nx + m