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/lichao.cpp | 46 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 content/datastructures/lichao.cpp (limited to 'content/datastructures/lichao.cpp') diff --git a/content/datastructures/lichao.cpp b/content/datastructures/lichao.cpp new file mode 100644 index 0000000..f66778e --- /dev/null +++ b/content/datastructures/lichao.cpp @@ -0,0 +1,46 @@ +vector xs; // IMPORTANT: Initialize before constructing! +int findX(int i) {return lower_bound(all(xs), i) - begin(xs);} + +struct Fun { // Default: Linear function. Change as needed. + ll m, c; + ll operator()(int x) {return m*xs[x] + c;} +}; + +// Default: Computes min. Change lines with comment for max. +struct Lichao { + static constexpr Fun id = {0, inf}; // {0, -inf} + int n, cap; + vector seg; + Lichao() : n(sz(xs)), cap(2<<__lg(n)), seg(2*cap, id) {} + + void _insert(Fun f, int l, int r, int i) { + while (i < 2*cap){ + int m = (l+r)/2; + if (m >= n) {r = m; i = 2*i; continue;} + Fun &g = seg[i]; + if (f(m) < g(m)) swap(f, g); // > + if (f(l) < g(l)) r = m, i = 2*i; // > + else l = m, i = 2*i+1; + }} + void insert(Fun f) {_insert(f, 0, cap, 1);} + + void _segmentInsert(Fun f, int l, int r, int a, int b, int i) { + if (l <= a && b <= r) _insert(f, a, b, i); + else if (a < r && l < b){ + int m = (a+b)/2; + _segmentInsert(f, l, r, a, m, 2*i); + _segmentInsert(f, l, r, m, b, 2*i+1); + }} + void segmentInsert(Fun f, ll l, ll r) { + _segmentInsert(f, findX(l), findX(r), 0, cap, 1); + } + + ll _query(int x) { + ll ans = inf; // -inf + for (int i = x + cap; i > 0; i /= 2) { + ans = min(ans, seg[i](x)); // max + } + return ans; + } + ll query(ll x) {return _query(findX(x));} +}; -- cgit v1.2.3