package com.study.demo;

import java.util.Scanner;

public class test7 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int x = scanner.nextInt();
        int y = scanner.nextInt();
        int startYear = 2016, startMonth = 8;
        int totalMonths = (x - startYear) * 12 + y - startMonth + 1;
        System.out.println(totalMonths);
    }
}