The computer is greater and greater now.
You can imagine that a computer with countless cores. That will be Greeeeeat!
So the computer can deal with tasks continuous but not cut into small ones.
Give you N tasks and its start time and end time. Each core can only deal with one task at a moment and the tasks should not be cut into small ones. The problem will ask you several questions that how many cores are at work at moment T.
3 1 3 2 4 3 5 3 2 3 4
2 3 2
无
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