叶孤心的专栏

Power Network Time Limit:2000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description A power network consists of nodes (power stations, consumers and

Drainage Ditches Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description Every time it rains on Farmer John's fields, a pond forms over Bes

Flow Problem Time Limit:5000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description Network flow is a well-known difficult problem for ACMers. Given a g