#include <iostream>
using namespace std;

template<typename T>
struct MyStruct {
    T val;
    MyStruct(T v) : val(v) {}
    void show() { cout << "General: " << val << endl; }
};

template<>
struct MyStruct<int> {
    int val;
    MyStruct(int v) : val(v * 2) {}
    void show() { cout << "Specialized int: " << val << endl; }
};

int main() {
    MyStruct<double> d(3.14);
    MyStruct<int> i(5);
    d.show();
    i.show();
    return 0;
}