摘要:
Mole decided to live in an abandoned mine. The structure of the mine is represented by a simple connected undirected graph which consists of N vertice 阅读全文
摘要:
Vasily the bear has got a large square white table of n rows and n columns. The table has got a black border around this table. Vasily the bear wants 阅读全文
摘要:
Think of New York as a rectangular grid consisting of N vertical avenues numerated from 1 to N and M horizontal streets numerated 1 to M. C friends ar 阅读全文
摘要:
Little X has n distinct integers: p1, p2, ..., pn. He wants to divide all of them into two sets A and B. The following two conditions must be satisfie 阅读全文