Problem:
Score : 100 points

Problem Statement

Given is an integer x that is greater than or equal to 0, and less than or equal to 1.
Output 1 if x is equal to 0, or 0 if x is equal to 1.

Constraints

0 \leq x \leq 1

x is an integer

Input

Input is given from Standard Input in the following format:

x

Output

Print 1 if x is equal to 0, or 0 if x is equal to 1.

Sample Input 1

1

Sample Output 1

0

Sample Input 2

0

Sample Output 2

1

Solution in C# (.NET Core 3.1.201) (judge verdict: Runtime Error)

using System;
using System.Collections.Generic;
using System.Linq;
namespace KCLC
{
  class Program
  {
    static void Main()
    {
      string[] Input = Console.ReadLine().Split();
      int[] intInput = new int [Input.Length];
      for(int i = 0; i < Input.Length; i++)
      {
        intInput[i] = int.Parse(Input[i]);
      }
      Array.Sort(intInput);
      Array.Reverse(intInput);
      Console.WriteLine(intInput[0] * intInput[1]);
    }
  }
}