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/graph/pushRelabel.cpp | 64 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 content/graph/pushRelabel.cpp (limited to 'content/graph/pushRelabel.cpp') diff --git a/content/graph/pushRelabel.cpp b/content/graph/pushRelabel.cpp new file mode 100644 index 0000000..73a9eae --- /dev/null +++ b/content/graph/pushRelabel.cpp @@ -0,0 +1,64 @@ +struct Edge { + int to, rev; + ll f, c; +}; + +vector> adj; +vector> hs; +vector ec; +vector cur, H; + +void addEdge(int u, int v, ll c) { + adj[u].push_back({v, (int)sz(adj[v]), 0, c}); + adj[v].push_back({u, (int)sz(adj[u])-1, 0, 0}); +} + +void addFlow(Edge& e, ll f) { + if (ec[e.to] == 0 && f > 0) + hs[H[e.to]].push_back(e.to); + e.f += f; + adj[e.to][e.rev].f -= f; + ec[e.to] += f; + ec[adj[e.to][e.rev].to] -= f; +} + +ll maxFlow(int s, int t) { + int n = sz(adj); + hs.assign(2*n, {}); + ec.assign(n, 0); + cur.assign(n, 0); + H.assign(n, 0); + H[s] = n; + ec[t] = 1;//never set t to active... + vector co(2*n); + co[0] = n - 1; + for (Edge& e : adj[s]) addFlow(e, e.c); + for (int hi = 0;;) { + while (hs[hi].empty()) if (!hi--) return -ec[s]; + int v = hs[hi].back(); + hs[hi].pop_back(); + while (ec[v] > 0) { + if (cur[v] == sz(adj[v])) { + H[v] = 2*n; + for (int i = 0; i < sz(adj[v]); i++) { + Edge& e = adj[v][i]; + if (e.c - e.f > 0 && + H[v] > H[e.to] + 1) { + H[v] = H[e.to] + 1; + cur[v] = i; + }} + co[H[v]]++; + if (!--co[hi] && hi < n) { + for (int i = 0; i < n; i++) { + if (hi < H[i] && H[i] < n) { + co[H[i]]--; + H[i] = n + 1; + }}} + hi = H[v]; + } else { + Edge& e = adj[v][cur[v]]; + if (e.c - e.f > 0 && H[v] == H[e.to] + 1) { + addFlow(adj[v][cur[v]], min(ec[v], e.c - e.f)); + } else { + cur[v]++; +}}}}} -- cgit v1.2.3