Create 2065-maximum-path-quality-of-a-graph.js

Author: everthis

2065-maximum-path-quality-of-a-graph.js

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+/**
+ * @param {number[]} values
+ * @param {number[][]} edges
+ * @param {number} maxTime
+ * @return {number}
+ */
+const maximalPathQuality = function(values, edges, maxTime) {
+    let zeroMax = 0;
+    let n = values.length;
+    let ll = Array.from({length: n + 1}, () => [])
+    for (let edge of edges) {
+      let u = edge[0];
+      let v = edge[1];
+      let t = edge[2];
+      ll[u].push([v, t]);
+      ll[v].push([u, t]);
+    }
+    const visited = Array(n + 1).fill(false);
+    dfs(0, 0, 0, maxTime, visited);
+    return zeroMax;
+
+    function dfs(val,  curNode,  curTime,  maxTime, visited) {
+      if (curTime > maxTime) {
+        return;
+      }
+      let before = visited[curNode];
+      if (!visited[curNode]) {
+        val += values[curNode];
+        visited[curNode] = true;
+      }
+      if (curNode == 0) {
+        zeroMax = Math.max(zeroMax, val);
+      }
+      for (let next of (ll[curNode] || [])) {
+        dfs(val, next[0], curTime + next[1], maxTime, visited);
+      }
+      visited[curNode] = before;
+    }
+};