diff --git a/meeting-rooms/DaleSeo.rs b/meeting-rooms/DaleSeo.rs
new file mode 100644
index 0000000000..ca2361a992
--- /dev/null
+++ b/meeting-rooms/DaleSeo.rs
@@ -0,0 +1,8 @@
+// TC: O(n logn)
+// SC: O(1)
+impl Solution {
+    pub fn can_attend_meetings(mut intervals: Vec<Vec<i32>>) -> bool {
+        intervals.sort_by_key(|i| i[0]);
+        intervals.windows(2).all(|w| w[0][1] <= w[1][0])
+    }
+}