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Frequency Queries

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Problem Statement
You are given queries. Each query is of the form two integers described below:
1 x : Insert x in your data structure.
2 y : Delete one occurence of y from your data structure, if present.
3 z : Check if any integer is present whose frequency is exactly z. If yes, print 1 else 0.

The queries are given in the form of a 2-D array queries of size q where queries[i][0] contains the operation, and queries[i][1] contains the data element. For example, you are given array queries=\left[(1,1),(2,2),(3,2),(1,1),(1,1),(2,1),(3,2)\right]. The results of each operation are:

Return an array with the output: \left[0,1\right].

Function Description
Complete the freqQuery function. It must return an array of integers where each element is a 1 if there is at least one element value with the queried number of occurrences in the current array, or 0 if there is not.

freqQuery has the following parameter(s):

  • queries: a 2-d array of integers

Input Format
The first line contains of an integer q, the number of queries.
Each of the next q lines contains two integers denoting the 2-d array queries.

* 1 \le q \le 10^6
* 1 \le x,y,z \le 10^9
* All queries\left[i\right]\left[0\right] \in {1,2,3}
* All queries\left[i\right]\left[1\right] \le 10^9

Output Format
Return an integer array consisting of all the outputs of queries of type 3.

Sample Input 0

Sample Output 0