摘要：
【原题】 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= 阅读全文
摘要：
【原题】 This is a harder version of the problem. In this version n≤500000n≤500000 The outskirts of the capital are being actively built up in Berland. Th 阅读全文