Problem:
Score: 100 points

Problem Statement

In this problem, a date is written as Y-M-D. For example, 2019-11-30 means November 30, 2019.

Integers M_1, D_1, M_2, and D_2 will be given as input.

It is known that the date 2019-M_2-D_2 follows 2019-M_1-D_1.

Determine whether the date 2019-M_1-D_1 is the last day of a month.

Constraints

Both 2019-M_1-D_1 and 2019-M_2-D_2 are valid dates in the Gregorian calendar.

The date 2019-M_2-D_2 follows 2019-M_1-D_1.

Input

Input is given from Standard Input in the following format:

M_1 D_1
M_2 D_2

Output

If the date 2019-M_1-D_1 is the last day of a month, print 1; otherwise, print 0.

Sample Input 1

11 16
11 17

Sample Output 1

0

November 16 is not the last day of a month.

Sample Input 2

11 30
12 1

Sample Output 2

1

November 30 is the last day of November.

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
namespace AtConderCSharp
{
    class Program
    {
        public static void Main()
        {
            bool count;
            var md1 = Console.ReadLine().Split(' ');
            int m1 = int.Parse(md1[0]);
            int d1 = int.Parse(md1[1]);

            var md2 = Console.ReadLine().Split(' ');
            int m2 = int.Parse(md2[0]);
            int d2 = int.Parse(md2[1]);
            if(m1 == 2 || m1 == 4 || m1 == 6 || m1 == 9 || m1 == 11)
            {
                if(m1 == 2 && d1 == 28)
                {
                    if(d2 == 29)
                    {
                        Console.WriteLine('0');
                    }
                    else
                    {
                        Console.WriteLine('1');
                    }

                }
                else if(d1 == 30)
                {
                    Console.WriteLine('1');
                }
                else
                {
                    Console.WriteLine('0');
                }
            }
            else
            {
                if(d1 == 31)
                {
                    Console.WriteLine('1');
                }
                else
                {
                    Console.WriteLine('0');
                }
            }
        }
    }
}