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| author | mzuenni <mzuenni@users.noreply.github.com> | 2024-07-28 22:54:40 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-07-28 22:54:40 +0200 |
| commit | 8d11c6c8213f46f0fa19826917c255edd5d43cb1 (patch) | |
| tree | 96d75baff33d5a04b5a60f1a41f514a26c716874 /test/graph/minCostMaxFlow.cpp | |
| parent | 8c33b4e0d3030cfed17fc64b4fe41133339f6d87 (diff) | |
Test (#4)
* update
* moved content in subdir
* rename file
* add test setup
* add test setup
* add github action
* automaticly test all cpp files
* timeout after 10s
* setulimit and dont zero memory
* test build pdf
* install latexmk
* update
* update
* ngerman
* fonts
* removed old code
* add first test
* added tests
* test in sorted order
* more tests
* simplified test
* more tests
* fix suffix tree
* fixes and improvements
* done ust lst directly
* fix swap
* add links to pdf
* fix constants
* add primorial
* add comment
* various improvements
* more tests
* added missing stuf
* more tests
* fix tests
* more tests
* more tests
* more tests
* fix recursion?
* test trie
* more tests
* only use python temporarily for listings
* only use python temporarily for listings
* more tests
* fix longestCommonSubstring
* more tests
* more tests
* made code more similiar
* fix?
* more tests
* more tests
* more tests
* add ahoCorasick test + limit 4GB stack size
* more tests
* fix test
* add additional test
* more tests
* more tests
* fix?
* better fix
* fix virtual tree
* more tests
* more tests
* recursive closest pair
* more tests
* decrease limit
* new tests
* more tests
* fix name
* more tests
* add test
* new test
* more tests
* more tests
* more tests
* more tests
* new test and content
* new code
* new code
* larger tests
* fix and test
* new test
* new test
* update pdf
* remove comments
* new test
* more tests
* more testcases
* more tests
* increased limit
* more tests
* more tests
* more tests
* new tests
* more tests
* shortened code
* new test
* add basic tests for bigint
* more tests
* removed old files
* new test
* ignore some files
* more auto more ccw
* fix test
* more tests
* fix
* new tests
* more tests
* more tests
* stronger test
* actually verify delaunay...
* more tests
* fix header
* more tests
* run tests parallel?
* test parralel?
* add --missing
* separate workflows
* test
* is the pdf checked?
* separate workflows
* fix workflow
* more workflows
---------
Co-authored-by: Yidi <noob999noob999@gmail.com>
Diffstat (limited to 'test/graph/minCostMaxFlow.cpp')
| -rw-r--r-- | test/graph/minCostMaxFlow.cpp | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/test/graph/minCostMaxFlow.cpp b/test/graph/minCostMaxFlow.cpp new file mode 100644 index 0000000..8c92aa7 --- /dev/null +++ b/test/graph/minCostMaxFlow.cpp @@ -0,0 +1,68 @@ +#include "../util.h" +#pragma GCC diagnostic ignored "-Wshadow" +namespace matching { + constexpr int N_LEFT = 1000; + constexpr int N_RIGHT = 1000; + constexpr double INF = LD::INF; + #include <graph/maxWeightBipartiteMatching.cpp> +} +namespace mcmf { + #include <graph/minCostMaxFlow.cpp> +} + + +void stress_test() { + ll queries = 0; + for (int tries = 0; tries < 20'000; tries++) { + auto [l, r] = Random::pair<int>(1, 30); + mcmf::MinCostFlow mcmf(l+r+2, 0, 1); + + for (int i = 0; i < l; i++) mcmf.addEdge(0, 2 + i, 1, 0); + for (int i = 0; i < r; i++) mcmf.addEdge(2 + l + i, 1, 1, 0); + for (int i = 0; i < l; i++) { + for (int j = 0; j < r; j++) { + matching::costs[i][j] = Random::integer<int>(-100, 100); + mcmf.addEdge(2 + i, 2 + l + j, 1, -matching::costs[i][j]); + } + } + + mcmf.mincostflow(); + ll got = -mcmf.mincost; + double expected = matching::match(l, r); + + if (got != expected) cerr << "got: " << got << ", expected: " << expected << FAIL; + queries += l + r; + } + cerr << "tested random queries: " << queries << endl; +} + +constexpr int N = 1'000; +constexpr int M = 10'000; +void performance_test() { + using namespace mcmf; + timer t; + + Graph<NoData> g(N); + g.erdosRenyi(M); + MinCostFlow mcmf(N, 0, 1); + vector<ll> potential = Random::integers<ll>(N, 0, 1'000'000ll); + g.forEdges([&](int a, int b){ + ll c = Random::integer<ll>(1, 1000'000); + ll cost = Random::integer<ll>(0, 1000'000); + mcmf.addEdge(a, b, c, potential[b] + cost - potential[a]); + mcmf.addEdge(b, a, c, potential[a] + cost - potential[b]); + }); + + t.start(); + mcmf.mincostflow(); + t.stop(); + + hash_t hash = mcmf.mincost; + if (t.time > 500) cerr << "too slow: " << t.time << FAIL; + cerr << "tested performance: " << t.time << "ms (hash: " << hash << ")" << endl; +} + +int main() { + stress_test(); + performance_test(); +} |