counting


How to answer queries of type l,r,k which finds number of elements in an array in range l to r which occurs atleast k times?


How to compute answer to queries of type l,r,k which finds number of elements in an array which occurs atleast k times in range l to r ? How to use Mo's algorithm?
If you have offline queries, you can use Mo's algorithm.
The following link is quite helpful.Anudeep's blog - Mo's Algorithm

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