摘要：
You have a given picture with size w×hw×h. Determine if the given picture has a single "+" shape or not. A "+" shape is described below: A "+" shape h 阅读全文
摘要：
You may have already known that a standard ICPC team consists of exactly three members. The perfect team however has more restrictions. A student can 阅读全文
摘要：
C国的死对头A国这段时间正在进行军事演习，所以C国间谍头子Derek和他手下Tidy又开始忙乎了。A国在海岸线沿直线布置了N个工兵营地,Derek和Tidy的任务就是要监视这些工兵营地的活动情况。由于采取了某种先进的监测手段，所以每个工兵营地的人数C国都掌握的一清二楚,每个工兵营地的人数都有可能发生变动，可能增加或减少若干人手,但这些都逃不过C国的监视。 中央情报局要研究敌人究竟演习什么战术,... 阅读全文