摘要：
原文链接 There are many trees forming a m * n grid, the grid starts from (1,1). Farmer Sherlock is standing at (0,0) point. He wonders how many trees he c 阅读全文
摘要：
Relatives Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 15708 Accepted: 7966 Description Given n, a positive integer, how many positive i 阅读全文