#include "stdafx.h"
#include <iostream>
#include <string>

using std::cout; using std::cin; using std::endl; using std::istream; using std::ostream;

class date
{
public:
    date() = default;

    bool organizeDates();
    bool organize();
    ostream &output(ostream &os) { os << year << " " << month << " " << day; return os; }
    istream &input(istream &is) { is >> year >> month >> day; return is; }

private:

    bool checkValid();
    bool checkSwitch(unsigned &item1, unsigned &item2, unsigned &item3);
    void switchItems(unsigned &item1, unsigned &item2) { unsigned tempItem1 = item1; item1 = item2; item2 = tempItem1; }

    unsigned year = 0;
    unsigned month = 0;
    unsigned day = 0;
};

bool date::checkValid()
{
    if (month <= 12 && day <= 31)
        return 1;
    return 0;
}

bool date::checkSwitch(unsigned &item1, unsigned &item2, unsigned &item3)
{
    switchItems(item1, item2);
    if (checkValid())
    {
        return true;
    }
    else
    {
        switchItems(item1, item2);
        switchItems(item2, item3);
        if (checkValid())
            return true;
        else
        {
            switchItems(item2, item3);
            switchItems(item1, item3);
            if (checkValid())
            {
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}

bool date::organize()
{
    if (checkValid())
        return 1;
    else
    {
        if (checkSwitch(day, month, year))
        {
            return true;
        }
        else if (checkSwitch(year, month, day))
        {
            return true;
        }
        else if (checkSwitch(day, year, month))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}

bool date::organizeDates()
{
    if (checkValid())
    {
        return true;
    }
    else
    {
        if (organize())
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    return false;
}

int main()
{
    cout << "Enter year, month, date and ill try and organize it" << endl;
    date dawg;
    dawg.input(cin);
    if (dawg.organizeDates())
        dawg.output(cout) << endl;
    else
        cout << "Your input was invalid" << endl;

    return 0;
}