「NOIP 2009」最优贸易

2016-11-07
描述 给定一个 n ( n ≤ 1 0 5 ) n(n\le {10}^5) n ( n ≤ 1 0 ​ 5 ​ ​ ) 个点, m ( m ≤ 1 0 6 ) m(m\le {10}^6) m ( m ≤ ......