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/dynamicConvexHull.cpp | 36 ++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 content/datastructures/dynamicConvexHull.cpp (limited to 'content/datastructures/dynamicConvexHull.cpp') diff --git a/content/datastructures/dynamicConvexHull.cpp b/content/datastructures/dynamicConvexHull.cpp new file mode 100644 index 0000000..d669847 --- /dev/null +++ b/content/datastructures/dynamicConvexHull.cpp @@ -0,0 +1,36 @@ +struct Line { + mutable ll m, b, p; + bool operator<(const Line& o) const {return m < o.m;} + bool operator<(ll x) const {return p < x;} +}; + +struct HullDynamic : multiset> { + // (for doubles, use inf = 1/.0, div(a,b) = a/b) + ll div(ll a, ll b) {return a / b - ((a ^ b) < 0 && a % b);} + + bool isect(iterator x, iterator y) { + if (y == end()) {x->p = INF; return false;} + if (x->m == y->m) x->p = x->b > y->b ? INF : -INF; + else x->p = div(y->b - x->b, x->m - y->m); + return x->p >= y->p; + } + + void add(ll m, ll b) { + auto x = insert({m, b, 0}); + while (isect(x, next(x))) erase(next(x)); + if (x != begin()) { + x--; + if (isect(x, next(x))) { + erase(next(x)); + isect(x, next(x)); + }} + while (x != begin() && prev(x)->p >= x->p) { + x--; + isect(x, erase(next(x))); + }} + + ll query(ll x) { + auto l = *lower_bound(x); + return l.m * x + l.b; + } +}; -- cgit v1.2.3