#include <iostream>
#include <algorithm>
#include <string>
#include <vector>

namespace my {
    template <typename Iterator, typename U>
    int count(Iterator begin, Iterator end, const U& u) {
        int counter = 0;

        for(; begin != end; begin++) {
            if (u == *begin) {
                ++counter;
            }
        }

        return counter;
    }
}

int main() {
    std::vector<int> ints = {1, 2, 2, 3};
    std::vector<std::string> strings = {"ala", "ma", "kota", "ala"};

    std::cout << my::count(ints.begin(), ints.end(), 2) << '\n'
              << my::count(strings.begin(), strings.end(), "ala") << '\n';

    /*auto iterator = ints.begin();
    iterator += 2;
    --iterator;
    std::cout << *iterator;*/
}