#include <iostream>

struct Pair {
    int left;
    int right;
};

class Number {
    int value_;

public:
    explicit Number(int initial) : value_{initial} {
    }

    int value() {
        return value_;
    }
};

int main() {
    Pair pair{3, 4};
    Number number{6};
    std::cout << pair.left << ' ' << pair.right << '\n';
    std::cout << number.value() << '\n';
    return 0;
}