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>
long long max(long long a,long long b) {
    if (a > b) return a;
    else return b;
}

int main(void)
{
    long long a,b,c,d;
    scanf("%ld %ld %ld %ld", &a, &b, &c, &d);
    long long amax = max(a * c,max(a * d,max(b * c,b * d)));
    printf("%ld\n",amax);
    return 0;
}