#include <cassert>
#include <iostream>
#include <utility>

int select(int&) { return 1; }
int select(const int&) { return 2; }
int select(int&&) { return 3; }
template<class T>
int relay(T&& x) { return select(std::forward<T>(x)); }
template<class T>
int named(T&& x) { return select(x); }

int main() {
    int n = 1;
    const int c = 2;
    assert(relay(n) == 1);
    assert(relay(c) == 2);
    assert(relay(3) == 3);
    assert(named(3) == 1);
    std::cout << relay(n) << ' ' << relay(c) << ' ' << relay(3) << '\n';
}