Q)Write a C++ function void store(int key,int value) in a class such that the vector keys stores a key in each of its index's and the vector values contains a list of values associated with that key in each of its index's .

#include

#include

class A {

public:

void store (int key,int value)

{

// Define function here.

}

private:

vector keys;

vector > values; // This is a vector that contains a list of type of int<> in each index.

}

When we call

store(2,5) and store (2,7) in int main(), vector keys should have the value 2 in its first index and the first index of the vector values should contain a list that contains 5 and 7.