随笔分类 -  <span class="badge1 ">1</span>DFS

摘要：ZOJ Problem Set - 2100SeedingTime Limit:1 Second Memory Limit:32768 KBIt is spring time and farmers have to plant seeds in the field. Tom has a nice field, which is a rectangle with n * m squares. There are big stones in some of the squares.Tom has a seeding-machine. At the beginning, the machine li 阅读全文