iinJAVA

import java.util.Scanner;
class Scratch {
    static void wrong(int cheakCentury, int cheakDay, int cheakMonth, int cheakLetter, int cheakLength)
    {
        System.out.println(cheakCentury+" "+cheakDay+" "+cheakMonth+" "+cheakLetter);
        if(cheakLength == 1)
        {
            System.out.println("invalid IIN");
        }
        if(cheakMonth == 1)
        {
            System.out.println("wrong month");
        }
        if(cheakDay == 1)
        {
            System.out.println("wrong day");
        }
        if(cheakCentury == 1)
        {
            System.out.println("wrong Century");
        }
        if(cheakLetter == 1)
        {
            System.out.println("error: you enter letter");
        }
        if(cheakDay ==1 && cheakMonth == 1)
        {
            System.out.println("invalid IIN");
        }
        if(cheakCentury==1 || cheakDay==1 || cheakLetter==1 || cheakMonth==1 || cheakLength==1)
        {
            System.exit(0);
        }
    }

    public static void main(String[] args) {
        boolean wrongLength = false;
        Scanner in = new Scanner(System.in);
        String IIN = in.nextLine();
        System.out.println(IIN);
        if(IIN.length() != 12)
        {
            wrongLength = true;
            System.out.println("invalid IIN");
            System.exit(0);
        }
        boolean wrongLetter = false;
        for (int i = 0; i < IIN.length(); i++)
        {
            if (IIN.charAt(i) < '0' || IIN.charAt(i) > '9') {
                wrongLetter = true;
                System.out.println("invalid IIN: entered letter");
                System.exit(0);
            }
        }
        int cheakLength = wrongLength ? 1:0;
        String year = IIN.substring(0, 2);
        String month = IIN.substring(2, 4);
        String day = IIN.substring(4, 6);
        String century = IIN.substring(6, 7);
        int Year = Integer.parseInt(year);
        int Month = Integer.parseInt(month);
        int Day = Integer.parseInt(day);
        int Century = Integer.parseInt(century);
        boolean wrongMonth = false;
        boolean wrongDay = false;
        boolean wrongCentury = false;
        if (Month > 12 || Month <= 0)
        {
            wrongMonth = true;
        }
        if (Century > 6 || Century <= 0)
        {
            wrongCentury = true;
        }
        int leapYear = Year % 4;
        String monthout = "";
        switch (Month) {
            case 1: {
                monthout = "january";
                break;
            }
            case 2: {
                if (leapYear == 0)
                {
                    if (Day > 29)
                    {
                        wrongDay = true;
                    }
                    else
                        {
                        monthout = "febuary";
                        break;
                    }
                }
                else
                    {
                    if (Day > 28)
                    {
                        wrongDay = true;
                    } else
                        {
                        monthout = "febuary";
                        break;
                    }
                }
            }
            case 3: {
                monthout = "march";
                break;
            }
            case 4: {
                monthout = "april";
                break;
            }
            case 5: {
                monthout = "may";
                break;
            }
            case 6: {
                monthout = "june";
                break;
            }
            case 7: {
                monthout = "jule";
                break;
            }
            case 8: {
                monthout = "august";
                break;
            }
            case 9: {
                monthout = "september";
                break;
            }
            case 10: {
                monthout = "october";
                break;
            }
            case 11: {
                monthout = "november";
                break;
            }
            case 12: {
                monthout = "december";
                break;
            }
        }
        String sex = "";
        switch (Century) {
            case 1: {
                Year = Year + 1800;
                sex += "man";
                break;
            }
            case 3: {
                Year = Year + 1900;
                sex += "man";
                break;
            }
            case 5: {
                Year = Year + 2000;
                sex += "man";
                break;
            }
            case 2: {
                Year = Year + 1800;
                sex += "woman";
                break;
            }
            case 4: {
                Year = Year + 1900;
                sex += "woman";
                break;
            }
            case 6: {
                Year = Year + 2000;
                sex += "woman";
                break;
            }
        }
        int cheakCentury = wrongCentury ? 1 : 0;
        int cheakDay = wrongDay ? 1 : 0;
        int cheakMonth = wrongMonth ? 1 : 0;
        int cheakLetter = wrongLetter ? 1 : 0;
        wrong(cheakCentury, cheakDay, cheakMonth, cheakLetter, cheakLength);
        System.out.println("test answer");
        int Age = 2019 - Year;
        int today = 18;
        int currentMonth = 4;
        if (Month >= currentMonth && Day > today || Month > currentMonth) {
            Age = Age - 1;
        }
        System.out.println(Year + " " + Month + " " + Day + " " + Century);
        System.out.println("Age: " + Age);
        System.out.println("Date of birthday: " + Day + " " + monthout + " " + Year);
        System.out.println(sex);
    }
}