import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		} x==1 x 1 {
			System.out.println( "0" );
		} System.out.println( "0" ) System.out.println System.out System System.out "0" if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		} x==0 x 0 {
			System.out.println( "1" );
		} System.out.println( "1" ) System.out.println System.out System System.out "1" {
			System.out.println( "ng" );
		} System.out.println( "ng" ) System.out.println System.out System System.out "ng" sc.close() sc.close sc String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		if( x==1 ) {
			System.out.println( "0" );
		}
		else if(x==0){
			System.out.println( "1" );
		}
		else {
			System.out.println( "ng" );
		}				
		sc.close();
	}
}