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 --- content/datastructures/monotonicConvexHull.cpp | 27 ++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 content/datastructures/monotonicConvexHull.cpp (limited to 'content/datastructures/monotonicConvexHull.cpp') diff --git a/content/datastructures/monotonicConvexHull.cpp b/content/datastructures/monotonicConvexHull.cpp new file mode 100644 index 0000000..44bff83 --- /dev/null +++ b/content/datastructures/monotonicConvexHull.cpp @@ -0,0 +1,27 @@ +// Lower Envelope mit MONOTONEN Inserts und Queries. Jede neue +// Gerade hat kleinere Steigung als alle vorherigen. +struct Line { + ll m, b; + ll operator()(ll x) {return m*x+b;} +}; + +vector ls; +int ptr = 0; + +bool bad(Line l1, Line l2, Line l3) { + return (l3.b-l1.b)*(l1.m-l2.m) < (l2.b-l1.b)*(l1.m-l3.m); +} + +void add(ll m, ll b) { // Laufzeit O(1) amortisiert + while (sz(ls) > 1 && bad(ls.end()[-2], ls.end()[-1], {m, b})) { + ls.pop_back(); + } + ls.push_back({m, b}); + ptr = min(ptr, sz(ls) - 1); +} + +ll query(ll x) { // Laufzeit: O(1) amortisiert + ptr = min(ptr, sz(ls) - 1); + while (ptr < sz(ls)-1 && ls[ptr + 1](x) < ls[ptr](x)) ptr++; + return ls[ptr](x); +} \ No newline at end of file -- cgit v1.2.3