Meeting Rooms

Given meeting time intervals, print whether one person can attend every meeting. Input format: - First line: n - Next n lines: start end Intervals are half-open: a meeting ending at time t does not overlap a meeting starting at time t. Print `true` if no meetings overlap, otherwise print `false`.

0 <= n <= 10^5
-10^9 <= start <= end <= 10^9

3
0 30
5 10
15 20

false

2
7 10
2 4

true