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-rw-r--r--content/graph/bellmannFord.cpp19
1 files changed, 19 insertions, 0 deletions
diff --git a/content/graph/bellmannFord.cpp b/content/graph/bellmannFord.cpp
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index 0000000..09ea1aa
--- /dev/null
+++ b/content/graph/bellmannFord.cpp
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+auto bellmannFord(int n, vector<edge>& edges, int start) {
+ vector<ll> dist(n, INF), prev(n, -1);
+ dist[start] = 0;
+
+ for (int i = 1; i < n; i++) {
+ for (edge& e : edges) {
+ if (dist[e.from] != INF &&
+ dist[e.from] + e.cost < dist[e.to]) {
+ dist[e.to] = dist[e.from] + e.cost;
+ prev[e.to] = e.from;
+ }}}
+
+ for (edge& e : edges) {
+ if (dist[e.from] != INF &&
+ dist[e.from] + e.cost < dist[e.to]) {
+ // Negativer Kreis gefunden.
+ }}
+ return dist; //return prev?
+}