20 lines
293 B
Markdown
20 lines
293 B
Markdown
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# <20><><EFBFBD><EFBFBD>Լ<EFBFBD><D4BC>
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* https://vjudge.net/contest/509525#discuss
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### <20><><EFBFBD><EFBFBD>
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<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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### <20><><EFBFBD><EFBFBD>
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* x1-x2<=w
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* x1<=x2+w
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* dist[v]<=dist[u]+w
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* add(x2,x1,w);
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* x1-x2>=1? add(x1,x2,-1);
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* <20><><EFBFBD><EFBFBD>·-><3E><><EFBFBD><EFBFBD>ֵ<EFBFBD><D6B5><EFBFBD><EFBFBD>֮<EFBFBD><D6AE>Ȼ
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### <20>ؼ<EFBFBD><D8BC><EFBFBD>
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<EFBFBD><EFBFBD>ѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>·<EFBFBD><EFBFBD>spfa
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### <20>״<EFBFBD><D7B4><EFBFBD>
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* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* <20><>ͼ
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### <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* PPT
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