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;
using System.Collections.Generic;
public class Program{
  public static void Main(){
    string[] MD1 = Console.ReadLine().Split(' ');
    string[] MD2 = Console.ReadLine().Split(' ');
    int[] MD = new int[2];
    int[] md = new int[2];
    for (var i = 0; i < MD1.Length; i++)
    {
      int a = int.Parse(MD1[i]);
      MD[i] = a;
    }
    for (var i = 0; i < MD2.Length; i++)
    {
      int a = int.Parse(MD2[i]);
      md[i] = a;
    }
    if (md[1] == 1)
    {
      Console.WriteLine(1);
    }
    else
    {
      Console.WriteLine(0);
    }
  }
}