//This file is main.C
#include <iostream>
#include <cstdlib>
#include "date.h"
using namespace std;

int main()
{
	const int len[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
	int status = EXIT_SUCCESS;

	int n1 = 0;
	for (int year1 = 1901; year1 <= 1905; ++year1) {
		cout << year1 << "\n";   //assure the user that we're making progress
		for (int month1 = 1; month1 <= 12; ++month1) {
			for (int day1 = 1; day1 <= len[month1]; ++day1, ++n1) {

				const date d1(month1, day1, year1);

				int n2 = 0;
				for (int year2 = 1901; year2 <= 1905; ++year2) {
					for (int month2 = 1; month2 <= 12; ++month2) {
						for (int day2 = 1; day2 <= len[month2]; ++day2, ++n2) {

							const date d2(month2, day2, year2);
							const date mid = midpoint(d1, d2);

							const int dist1 = distance(d1, mid);
							const int dist2 = distance(mid, d2);
							int discrepancy = dist1 - dist2;
							if (discrepancy < 0) {
								discrepancy = -discrepancy;
							}

							if (discrepancy > 1) {
								cout << "Distance from ";
								d1.print();
								cout << " to ";
								mid.print();
								cout << " is " << dist1 << ".\n";
								cout << "Distance from ";
								mid.print();
								cout << " to ";
								d2.print();
								cout << " is " << dist2 << ".\n";
								status = EXIT_FAILURE;
								goto done;
							}
						}
					}
				}
			}
		}
	}

	done:;
	return status;
}