Počítat frekvence ve vektorovém stl

c++ počítat frekvence prvky vektoru

// C++ program for count in C++ STL for
// a vector
#include <bits/stdc++.h>
using namespace std;
  
int main()
{
    vector<int> vect{ 3, 2, 1, 3, 3, 5, 3 };
    cout << "Number of times 3 appears : "
         << count(vect.begin(), vect.end(), 3);
  
    return 0;
}