nerd's blog

...MATCHING...
By nerd, 14 years ago, In English

WELCOME To Everyone!!!

Recently I've learned MaxFlow, MinCostMaxFlow and Matching...

Where can I solve problems in matching?

Thanks...

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14 years ago, # |
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why i'm getting minuses? because of my poor english?
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14 years ago, # |
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Try reading it http://codeforces.net/blog/entry/1279?locale=ru . The post similiar to yours (about max flow related problems - matchings, max flow, min cost and etc.). It's in russian, but you can find the links on problems, which are commonly in english.
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14 years ago, # |
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http://informatics.mccme.ru/moodle/mod/statements/view3.php?id=437&chapterid=588
As i understood, here we are given N cubes{with 6 letters on each side}  and name. We must answer, if we are able to gather name by using any letter from each cube?
If so, how can I use matching here?
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  • 14 years ago, # ^ |
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    We build graph with two sets of vertecies: 1) cubics, 2) every letter of name. We add edge between cubic i and letter j of name if there are exist letter j on cubic i. Now we just find max matching in bipartite graph. If the size of matching is equal to length of the name, then answer is yes.
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