From 8d11c6c8213f46f0fa19826917c255edd5d43cb1 Mon Sep 17 00:00:00 2001 From: mzuenni Date: Sun, 28 Jul 2024 22:54:40 +0200 Subject: 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 --- test/graph/minCostMaxFlow.cpp | 68 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 test/graph/minCostMaxFlow.cpp (limited to 'test/graph/minCostMaxFlow.cpp') 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 +} +namespace mcmf { + #include +} + + +void stress_test() { + ll queries = 0; + for (int tries = 0; tries < 20'000; tries++) { + auto [l, r] = Random::pair(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(-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 g(N); + g.erdosRenyi(M); + MinCostFlow mcmf(N, 0, 1); + vector potential = Random::integers(N, 0, 1'000'000ll); + g.forEdges([&](int a, int b){ + ll c = Random::integer(1, 1000'000); + ll cost = Random::integer(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(); +} -- cgit v1.2.3