import java.util.Scanner;

public class task12 {
	public static void main(String[] args) {
		Scanner console = new Scanner(System.in);
		System.out.println("Please enter day(1-31), mounth(1-12) and year: ");
		int day = console.nextInt();
		int mounth = console.nextInt();
		int year = console.nextInt();

		int nextDay = 0;
		int nextmount = 0;
		int nextYear = 0;

		boolean dateValidation = ((day < 1 || day > 31) || (mounth < 1 || mounth > 12) || (year < 0));
		if (dateValidation) {
			System.out.println("Input date is invalid!");

		} else {
			System.out.printf("Input date is: %d/ %d/ %d%n", day, mounth, year);
			boolean leapYear = (year % 4 == 0 && (year % 400 == 0 || year % 100 != 0));

			if (leapYear) {
				if (mounth == 4 || mounth == 6 || mounth == 9 || mounth == 11) {
					nextDay = day + 1;
					if (nextDay <= 30) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 30) {
						nextDay = 1;
						nextmount = mounth + 1;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				} else if (mounth == 1 || mounth == 3 || mounth == 5 || mounth == 7 || mounth == 8 || mounth == 10) {
					nextDay = day + 1;
					if (nextDay <= 31) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 31) {
						nextDay = 1;
						nextmount = mounth + 1;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				} else if (mounth == 2) {
					nextDay = day + 1;
					if (nextDay <= 29) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 29) {
						nextDay = 1;
						nextmount = mounth + 1;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				} else if (mounth == 12) {
					nextDay = day + 1;
					if (nextDay <= 31) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 31) {
						nextDay = 1;
						nextmount = 1;
						nextYear = year + 1;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				}
			} else if (!leapYear) {
				if (mounth == 4 || mounth == 6 || mounth == 9 || mounth == 11) {
					nextDay = day + 1;
					if (nextDay <= 30) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 30) {
						nextDay = 1;
						nextmount = mounth + 1;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				} else if (mounth == 1 || mounth == 3 || mounth == 5 || mounth == 7 || mounth == 8 || mounth == 10) {
					nextDay = day + 1;
					if (nextDay <= 31) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 31) {
						nextDay = 1;
						nextmount = mounth + 1;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				} else if (mounth == 2) {
					nextDay = day + 1;
					if (nextDay <= 28) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 28) {
						nextDay = 1;
						nextmount = mounth + 1;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				} else if (mounth == 12) {
					nextDay = day + 1;
					if (nextDay <= 31) {
						nextDay = nextDay;
						nextmount = mounth;
						nextYear = year;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					} else if (nextDay > 31) {
						nextDay = 1;
						nextmount = 1;
						nextYear = year + 1;
						System.out.printf("Output date is: %d/ %d /%d%n", nextDay, nextmount, nextYear);
					}
				}
			}
		}
	}
}