public class Main { 
    static int[] days = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

    public static boolean checkDate(int year, int month, int day) {
        if (month == 0 || month > 12)
            return false;
        if (day == 0 || (month != 2 && day > days[month]))
            return false;
        if (month == 2) {
            int leap = 0;
            if ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
                leap = 1;
            if (day > 28 + leap)
                return false;
        }
        return true;
    }

    public static int getSum(int x) {
        int sum = 0;
        while (x > 0) {
            sum += x % 10;
            x /= 10;
        }
        return sum;
    }

    public static void main(String[] args) {
        int ans = 0;
        for (int i = 19000101; i <= 99991231; i++) {
            int year = i / 10000;
            int day = i % 100;
            int month = i / 100 % 100;
            if (checkDate(year, month, day)) {
                if (getSum(year) == getSum(month) + getSum(day))
                    ans++;
            }
        }
        System.out.print(ans);
    }
}