Robot Motion Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 16166 Accepted: 7643 Description [外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-0K1yHoGJ-1614299697840)(http://poj.org/images/1573_1.jpg