#include <iostream>
    using namespace std;
    template <class T>
    inline T square(T p)
    {
        T result;
        result = p * p;
        return result;
    };
    template <>
    string square<string>(string str)
    {
        return (str+str);
    };
    int main()     
    {
        int k = 4, kk;
        string bb("A");
        kk = square<int>(k);
        cout << k << kk;
        cout << square<string>(bb) << endl;
    }