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/discreteLogarithm.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 content/math/discreteLogarithm.cpp (limited to 'content/math/discreteLogarithm.cpp') diff --git a/content/math/discreteLogarithm.cpp b/content/math/discreteLogarithm.cpp new file mode 100644 index 0000000..68866e0 --- /dev/null +++ b/content/math/discreteLogarithm.cpp @@ -0,0 +1,17 @@ +ll dlog(ll a, ll b, ll m) { //a > 0! + ll bound = sqrtl(m) + 1; //memory usage bound < p + vector> vals(bound); + for (ll i = 0, e = 1; i < bound; i++, e = (e * a) % m) { + vals[i] = {e, i}; + } + vals.emplace_back(m, 0); + sort(all(vals)); + ll fact = powMod(a, m - bound - 1, m); + + for (ll i = 0; i < m; i += bound, b = (b * fact) % m) { + auto it = lower_bound(all(vals), pair{b, 0}); + if (it->first == b) { + return (i + it->second) % m; + }} + return -1; +} -- cgit v1.2.3