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 (GCC 9.2.1) (judge verdict: Wrong Answer)

#include<stdio.h>
#include<math.h>

int main()
{
  long int a,b,c,d;

  scanf("%ld %ld %ld %ld",&a,&b,&c,&d);
  

  if(a>=0&&c>=0)printf("%ld",b*d);
  if(b<=0&&d<=0)printf("%ld",a*c);
  if(a>=0&&d<=0)printf("%ld",a*d);
  if(c>=0&&b<=0)printf("%ld",b*c);
  if(a<0&&b>0&&c<0&&d>0)
    {
      if(-a>b)printf("%ld",a*c);
      if(-a<b)printf("%ld",b*d);
    }

  
  return 0;
}