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Auto comment: topic has been updated by err0r (previous revision, new revision, compare).
2014-2015 ACM-ICPC, Asia Xian Regional Contest, problem C is a really good problem related to min cut. Also check out these problems: 1, 2, 3.
Another suggestion would be learning minimum cost flow problem, because a lot of problems can be modeled like that.
thank you ^_^
can you suggest some problems related to mincost as well? .
What's the idea for Xian Regional Contest, problem C?
Since this was necro'd, I'll use this opportunity to recommend 724E - Goods transportation