1 | // -*- c++ -*- |
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2 | |
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3 | // Use a DIMACS max flow file as follows: |
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4 | // graph_wrapper_time dimacs_max_flow_file |
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5 | |
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6 | #include <iostream> |
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7 | #include <fstream> |
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8 | #include <string> |
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9 | #include <vector> |
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10 | #include <lemon/invalid.h> |
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11 | #include <lemon/time_measure.h> |
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12 | #include <lemon/graph_wrapper.h> |
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13 | #include <lemon/preflow.h> |
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14 | #include <lemon/dimacs.h> |
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15 | #include <lemon/list_graph.h> |
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16 | |
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17 | using namespace lemon; |
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18 | |
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19 | using std::cout; |
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20 | using std::endl; |
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21 | |
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22 | template<typename Graph> |
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23 | void timeTest(std::string str, Graph& g) { |
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24 | g.clear(); |
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25 | typename Graph::Node s; |
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26 | typename Graph::Node t; |
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27 | typedef typename Graph::template EdgeMap<int> FlowMap; |
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28 | FlowMap cap(g); |
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29 | FlowMap flow(g); |
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30 | std::ifstream is(str.c_str()); |
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31 | readDimacs(is, g, cap, s, t); |
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32 | Timer ts; |
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33 | ts.reset(); |
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34 | |
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35 | typedef Preflow<Graph, int, FlowMap, FlowMap> MyPreflow; |
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36 | MyPreflow max_flow(g, s, t, cap, flow); |
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37 | max_flow.run(MyPreflow::NO_FLOW); |
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38 | cout << "flow value: " << max_flow.flowValue() << endl; |
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39 | cout << ts << endl; |
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40 | } |
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41 | |
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42 | int main(int, char** argv) { |
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43 | std::string in=argv[1]; |
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44 | |
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45 | typedef ListGraph Graph; |
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46 | Graph g; |
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47 | timeTest<Graph>(in, g); |
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48 | typedef GraphWrapper<Graph> Graph1; |
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49 | Graph1 g1(g); |
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50 | timeTest<Graph1>(in, g1); |
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51 | typedef GraphWrapper<Graph1> Graph2; |
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52 | Graph2 g2(g1); |
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53 | timeTest<Graph2>(in, g2); |
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54 | typedef GraphWrapper<Graph2> Graph3; |
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55 | Graph3 g3(g2); |
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56 | timeTest<Graph3>(in, g3); |
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57 | typedef GraphWrapper<Graph3> Graph4; |
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58 | Graph4 g4(g3); |
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59 | timeTest<Graph4>(in, g4); |
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60 | typedef GraphWrapper<Graph4> Graph5; |
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61 | Graph5 g5(g4); |
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62 | timeTest<Graph5>(in, g5); |
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63 | typedef GraphWrapper<Graph5> Graph6; |
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64 | Graph6 g6(g5); |
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65 | timeTest<Graph6>(in, g6); |
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66 | typedef GraphWrapper<Graph6> Graph7; |
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67 | Graph7 g7(g6); |
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68 | timeTest<Graph7>(in, g7); |
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69 | |
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70 | return 0; |
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71 | } |
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