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: Accepted)

#include <iostream>
#include <cstdio>
#include <vector>
#include <iomanip>
#include <unordered_map>
#include <unordered_set>
#include <algorithm>
#include <map>
#include <set>
#include <cmath>
using namespace std;

int main() {
    int V;

    cin >> V;

    cout << (V^1) << endl;

    return 0;
}