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>

int main(int argc, char *argv[])
{
int a;
int b;
int c;
int d;
int max;
int ret;
/* a<= x <= b, c<=y<=d */
ret=scanf("%d %d %d %d", &a,&b,&c,&d);

max = a*c;
if(max < a*d) max=a*d;
if(max < b*c) max=b*c;
if(max < b*d) max=b*d;
printf("%d", max);

}