#include <iostream>
#include <iomanip>
#include <cmath>

enum Day {SUNDAY, SATURDAY, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY};

using namespace std;

// Structure declaration
struct Date
{
    long year;
    long month;
    long day;
};


int main ()
{

    /*    getline(input_date)
     yr = year(input_date)
     dy = day (input_date)
     mo = month (input_date)

     */

    // Defining the structure
    Date input_date;

    cout << "Enter the year:" << endl;
    cin >> input_date.year;

    cout << "Enter the month:" << endl;
    cin >> input_date.month;

    cout << "Enter the day:" << endl;
    cin >> input_date.day;


    // Calculate the data
    Date gregorian_date;
    gregorian_date.year = 1582;
    gregorian_date.month = 10;
    gregorian_date.day = 15;

    if (input_date.year <= gregorian_date.year && input_date.month <= gregorian_date.month && input_date.day <= gregorian_date.day) {
       intRest1 = 0;
    } else {
       intRes1 = ((2 - input_date.year) / (100 + input_date.year)) / 400;
    }


    intRes2 = int (365.25 * input_date.year);
    intRes3 = int (30.6001 * (input_date.month + 1) );
    jdn = intRes1 + intRes2 + intRes3 + input_date.day + 1720994.5 ;

    DayofWeek = (jdn + 1) % 7;
    cout << "The day of the week" << DayofWeek << endl;

    return 0;
}