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/articulationPoints.bridges.cpp | 64 +++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 test/graph/articulationPoints.bridges.cpp (limited to 'test/graph/articulationPoints.bridges.cpp') diff --git a/test/graph/articulationPoints.bridges.cpp b/test/graph/articulationPoints.bridges.cpp new file mode 100644 index 0000000..a1b89d2 --- /dev/null +++ b/test/graph/articulationPoints.bridges.cpp @@ -0,0 +1,64 @@ +#include "../util.h" +struct edge { + ll from, to, id; +}; +#define Edge edge +#include +#undef Edge + +vector naiveBridges(const vector>& edges) { + vector res(sz(edges)); + + vector seen(sz(adj), -1); + for (int i = 0; i < sz(edges); i++) { + auto [a, b] = edges[i]; + vector todo = {a}; + seen[a] = i; + while (!todo.empty() && seen[b] != i) { + int c = todo.back(); + todo.pop_back(); + for (auto e : adj[c]) { + if (e.id == i) continue; + if (seen[e.to] == i) continue; + seen[e.to] = i; + todo.push_back(e.to); + } + } + res[i] = seen[b] != i; + } + return res; +} + +void stress_test_bridges() { + ll queries = 0; + for (int tries = 0; tries < 200'000; tries++) { + int n = Random::integer(1, 30); + int m = Random::integer(0, max(1, min(300, n*(n-1) / 2 + 1))); + Graph g(n); + g.erdosRenyi(m); + + adj.assign(n, {}); + vector> edges; + g.forEdges([&](int a, int b){ + adj[a].push_back({a, b, sz(edges)}); + adj[b].push_back({b, a, sz(edges)}); + edges.emplace_back(a, b); + }); + + auto expected = naiveBridges(edges); + find(); + vector got(sz(edges)); + for (auto e : bridges) { + if (got[e.id]) cerr << "error: duclicate" << FAIL; + got[e.id] = true; + } + + if (got != expected) cerr << "error" << FAIL; + queries += n; + } + cerr << "tested random queries: " << queries << endl; +} + +int main() { + stress_test_bridges(); +} -- cgit v1.2.3