摘要：
[2018-2019, ICPC, Asia Yokohama Regional Contest 2018] Problem G-What Goes Up Must Come Down 题面： Several cards with numbers printed on them are lined 阅读全文
摘要：
HDU-6767 New Equipments （最小费用最大流，费用流） Problem Description Little Q's factory recently purchased m pieces of new equipment, labeled by 1,2,…,m. There a 阅读全文