#include <iostream>

template <int N>
struct Factorial{
    static int const value= N * Factorial<N-1>::value;
};

template <>
struct Factorial<1>{
    static int const value = 1;
};

int main(){
    std::cout << Factorial<5>::value << std::endl;
    std::cout << 120 << std::endl;
    return 0;
}