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/minCostMaxFlow.cpp | 66 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 content/graph/minCostMaxFlow.cpp (limited to 'content/graph/minCostMaxFlow.cpp') diff --git a/content/graph/minCostMaxFlow.cpp b/content/graph/minCostMaxFlow.cpp new file mode 100644 index 0000000..14a222c --- /dev/null +++ b/content/graph/minCostMaxFlow.cpp @@ -0,0 +1,66 @@ +constexpr ll INF = 1LL << 60; // Größer als der maximale Fluss. +struct MinCostFlow { + struct edge { + int to; + ll f, cost; + }; + vector edges; + vector> adj; + vector pref, con; + vector dist; + const int s, t; + ll maxflow, mincost; + + MinCostFlow(int n, int source, int target) : + adj(n), s(source), t(target) {}; + + void addEdge(int u, int v, ll c, ll cost) { + adj[u].push_back(sz(edges)); + edges.push_back({v, c, cost}); + adj[v].push_back(sz(edges)); + edges.push_back({u, 0, -cost}); + } + + bool SPFA() { + pref.assign(sz(adj), -1); + dist.assign(sz(adj), INF); + vector inqueue(sz(adj)); + queue queue; + dist[s] = 0; + queue.push(s); + pref[s] = s; + inqueue[s] = true; + while (!queue.empty()) { + int cur = queue.front(); queue.pop(); + inqueue[cur] = false; + for (int id : adj[cur]) { + int to = edges[id].to; + if (edges[id].f > 0 && + dist[to] > dist[cur] + edges[id].cost) { + dist[to] = dist[cur] + edges[id].cost; + pref[to] = cur; + con[to] = id; + if (!inqueue[to]) { + inqueue[to] = true; + queue.push(to); + }}}} + return pref[t] != -1; + } + + void extend() { + ll w = INF; + for (int u = t; pref[u] != u; u = pref[u]) + w = min(w, edges[con[u]].f); + maxflow += w; + mincost += dist[t] * w; + for (int u = t; pref[u] != u; u = pref[u]) { + edges[con[u]].f -= w; + edges[con[u] ^ 1].f += w; + }} + + void mincostflow() { + con.assign(sz(adj), 0); + maxflow = mincost = 0; + while (SPFA()) extend(); + } +}; -- cgit v1.2.3