Create 2054-two-best-non-overlapping-events.js

Author: everthis

2054-two-best-non-overlapping-events.js

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+
+/**
+ * @param {number[][]} events
+ * @return {number}
+ */
+const maxTwoEvents = function(events) {
+  const n = events.length
+  events.sort((a, b) => a[0] - b[0])
+  const dp = Array.from({ length: n }, () => Array(3).fill(-1))
+
+  return dfs(0, 0)
+
+  function dfs(idx, cnt) {
+    if(cnt === 2 || idx >= n) return 0
+    if(dp[idx][cnt] === -1) {
+      let end = events[idx][1]
+      let lo = idx + 1, hi = n - 1;
+      while (lo < hi) {
+        const mid = lo + ((hi - lo) >> 1);
+        if (events[mid][0] <= end) lo = mid + 1
+        else hi = mid;
+      }
+      const include = events[idx][2] + (lo < n && events[lo][0] > end ? dfs(lo, cnt + 1) : 0);
+      const exclude = dfs(idx + 1, cnt);
+      dp[idx][cnt] = Math.max(include, exclude);
+    }
+
+    return dp[idx][cnt]
+  }
+};