using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(AddMonths(20210712, 5));

    }

    public static int AddMonths(int date, int months)

    {

        var year = date / 10000;

        var month = (date - year * 10000) / 100;

        var day = date - year * 10000 - month * 100;

        Console.WriteLine(year);

        Console.WriteLine(month);

        Console.WriteLine(day);

        year += months / 12;

        month += months %12;

        if(month > 12){

            month-=12;

            year++;

        }

        return year * 10000 + month * 100 + day;

    }

}