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/math/lgsFp.cpp | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 content/math/lgsFp.cpp (limited to 'content/math/lgsFp.cpp') diff --git a/content/math/lgsFp.cpp b/content/math/lgsFp.cpp new file mode 100644 index 0000000..0241742 --- /dev/null +++ b/content/math/lgsFp.cpp @@ -0,0 +1,26 @@ +void normalLine(int line, ll p) { + ll factor = multInv(mat[line][line], p); + for (ll& x : mat[line]) x = (x * factor) % p; +} + +void takeAll(int n, int line, ll p) { + for (int i = 0; i < n; i++) { + if (i == line) continue; + ll diff = mat[i][line]; + for (int j = 0; j < sz(mat[i]); j++) { + mat[i][j] -= (diff * mat[line][j]) % p; + mat[i][j] = (mat[i][j] + p) % p; +}}} + +void gauss(int n, ll mod) { + vector done(n, false); + for (int i = 0; i < n; i++) { + int j = 0; + while (j < n && (done[j] || mat[j][i] == 0)) j++; + if (j == n) continue; + swap(mat[i], mat[j]); + normalLine(i, mod); + takeAll(n, i, mod); + done[i] = true; +}} +// für Eindeutigkeit, Existenz etc. siehe LGS über R @\sourceref{math/gauss.cpp}@ -- cgit v1.2.3