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/berlekampMassey.cpp | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 content/math/berlekampMassey.cpp (limited to 'content/math/berlekampMassey.cpp') diff --git a/content/math/berlekampMassey.cpp b/content/math/berlekampMassey.cpp new file mode 100644 index 0000000..29e084f --- /dev/null +++ b/content/math/berlekampMassey.cpp @@ -0,0 +1,31 @@ +constexpr ll mod = 1'000'000'007; +vector BerlekampMassey(const vector& s) { + int n = sz(s), L = 0, m = 0; + vector C(n), B(n), T; + C[0] = B[0] = 1; + + ll b = 1; + for (int i = 0; i < n; i++) { + m++; + ll d = s[i] % mod; + for (int j = 1; j <= L; j++) { + d = (d + C[j] * s[i - j]) % mod; + } + if (!d) continue; + T = C; + ll coef = d * powMod(b, mod-2, mod) % mod; + for (int j = m; j < n; j++) { + C[j] = (C[j] - coef * B[j - m]) % mod; + } + if (2 * L > i) continue; + L = i + 1 - L; + swap(B, T); + b = d; + m = 0; + } + + C.resize(L + 1); + C.erase(C.begin()); + for (auto& x : C) x = (mod - x) % mod; + return C; +} -- cgit v1.2.3