摘要:
Problem H: Road Construction King Mercer is the king of ACM kingdom. There are one capital and some cities in his kingdom. Amazingly, there are no roa 阅读全文
摘要:
原题: Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ 阅读全文