55 lines
937 B
C++
55 lines
937 B
C++
#ifndef RODITTY_ZWICK_H_
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#define RODITTY_ZWICK_H_
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#include "graph/digraph.h"
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#include "graph/scc.h"
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#include "algorithm/tarjan.h"
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#include "algorithm/bfs.h"
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#include <vector>
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using namespace graph;
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namespace algo {
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// A randomized decremental algorithm for maintaining SCCs
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template<typename T>
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class RodittyZwick {
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public:
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RodittyZwick(Digraph<T> G) : G(G) {}
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//
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void sccDecrementalMaintenance();
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//
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void tcDecrementalMaintenance();
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private:
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Digraph<T> G;
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};
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template<typename T>
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void RodittyZwick<T>::sccDecrementalMaintenance() {
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std::map<T, T> A;
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Tarjan<T> tarjan(G);
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auto sccs = tarjan.run();
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for (auto& scc : sccs) {
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const auto& root = scc.representative();
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BFS<T> bfs(scc);
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auto spt = bfs.run(root);
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for (const auto& vertex : scc.vertices) {
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A[vertex] = root;
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}
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}
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}
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template<typename T>
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void RodittyZwick<T>::tcDecrementalMaintenance() {
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}
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}; // namespace algo
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#endif |