摘要：
Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A and B are called connected if they s 阅读全文
摘要：
B - Problem Arrangement Time Limit:2000MS Memory Limit:65536KB 64bit IO Format:%lld & %llu Submit Status Practice ZOJ 3777 B - Problem Arrangement Sub 阅读全文