摘要:
Pushing Boxes Description Imagine you are standing inside a two dimensional maze composed of square cells which may or may not be filled with rock. Yo 阅读全文
摘要:
ice(USACO) Description Bessie 在一个冰封的湖面上游泳,湖面可以表示为二维的平面,坐标范围是 1,000,000,000..1,000,000,000。 湖面上的N(1 . ...G. . ...G. . ...B. 0 .... . .... . .... . .... 阅读全文