2018年1月6日
A. The Way to Home
摘要： A. The Way to Home A frog lives on the axis Ox and needs to reach home which is in the point n. She starts from the point 1. The frog can jump to the 阅读全文
posted @ 2018-01-06 13:46 starry_sky 阅读(586) 评论(0) 推荐(0) 编辑