#include <iostream>
#include <cstdlib>
#include <ctime> 
using namespace std;

class date {
public:
	int year;
	int month; 
	int day;  

	void print() const; 
	void next(int n);  
	void next();     
	void prev(int n); 
	void prev();     
};

const int date_length[] {
	 0,  
	31, 
	28,
	31,
	30,
	31, 
	30, 
	31, 
	31,
	30,
	31, 
	30, 
	31  
};

bool is_leap_year(int year) {
	return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
}

void date::print() const {
	cout << month << "/" << day << "/" << year;
}

void date::next(int n) {
	for (int i = 0; i < n; ++i) {
		next();
	}
}

void date::next() {
	int max_days = (month == 2 && is_leap_year(year)) ? 29 : date_length[month];
	if (day < max_days) {
		++day;
	} else {
		day = 1;
		if (month < 12) {
			++month;
		} else {
			month = 1;
			++year;
		}
	}
}

void date::prev(int n) {
	for (int i = 0; i < n; ++i) {
		prev();
	}
}

void date::prev() {
	if (day > 1) {
		--day;
	} else {
		if (month > 1) {
			--month;
		} else {
			month = 12;
			--year;
		}
		day = (month == 2 && is_leap_year(year)) ? 29 : date_length[month];
	}
}

int main() {
	date testDate {2025, 3, 1};

	cout << "Original date: ";
	testDate.print();
	cout << endl;

	testDate.prev();

	cout << "After going 1 day into the past: ";
	testDate.print();
	cout << endl;

	return EXIT_SUCCESS;
}