#include <memory>
#include <iostream>
using namespace std;

unique_ptr<int> print(unique_ptr<int> p) {
    cout << *p << "\n";
    return move(p);
}

int main() {
    unique_ptr<int> p(new int(5));
    p = print(move(p));
    if (p) {
        cout << *p << "\n";
    }
}