1 files changed, 55 insertions, 0 deletions
diff --git a/Semestr 4/aisd/themis/BELLMAN.cpp b/Semestr 4/aisd/themis/BELLMAN.cpp
new file mode 100644
index 0000000..5a65096
--- /dev/null
+++ b/Semestr 4/aisd/themis/BELLMAN.cpp
@@ -0,0 +1,55 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+const int N = 503;
+int dist[N];
+vector<pair<int, pair<int, int>>> edges;
+int main()
+{
+  ios_base::sync_with_stdio(false);
+  cin.tie();
+  int n, m, s;
+  cin >> n >> m >> s;
+  for (int i = 0; i <= n; i++)
+  {
+    dist[i] = 2e9;
+  }
+  dist[s] = 0;
+  for (int i = 0; i < m; i++)
+  {
+    int u, v, w;
+    cin >> u >> v >> w;
+    edges.push_back({w, {u, v}});
+    // edges.push_back({w, {v, u}});
+  }
+
+  for (int i = 0; i < n + 1; i++)
+  {
+    for (auto e : edges)
+    {
+      int w = e.first;
+      int u = e.second.first;
+      int v = e.second.second;
+      if (dist[v] > dist[u] + w)
+      {
+        dist[v] = dist[u] + w;
+      }
+    }
+  }
+  for (auto e : edges)
+  {
+    int w = e.first;
+    int u = e.second.first;
+    int v = e.second.second;
+    if (dist[v] > dist[u] + w)
+    {
+      cout << "NIE\n";
+      return 0;
+    }
+  }
+  for (int i = 0; i < n; i++)
+  {
+    if (i != s && dist[i] < 1e9)
+      cout << i << " " << dist[i] << "\n";
+  }
+}
+\ No newline at end of file