message: Update meeting-rooms.cpp
diff: // Time: O(nlogn)
  // Space: O(n)
  -/**
  - * Definition for an interval.
  - * struct Interval {
  - * int start;
  - * int end;
  - * Interval() : start(0), end(0) {}
  - * Interval(int s, int e) : start(s), end(e) {}
  - * };
  - */
  class Solution {
  public:
  - bool canAttendMeetings(vector<Interval>& intervals) {
  - sort(intervals.begin(), intervals.end(),
  - [](const Interval& x, const Interval& y) { return x.start < y.start; });
  + bool canAttendMeetings(vector<vector<int>>& intervals) {
  + sort(intervals.begin(), intervals.end());
  for (int i = 1; i < intervals.size(); ++i) {
  - if (intervals[i].start < intervals[i - 1].end) {
  + if (intervals[i][0] < intervals[i - 1][1]) {
  return false;
  }
  }
  