C :

#include<stdio.h>
int main(){
int a;
scanf("%d",&a);
a/=a+a;
printf("%d\n",a);
return 0;
}

C++ :

#include <stdio.h>
int main() {
	int a;
	scanf("%d", &a);
	a /= a + a;
	printf("%d\n", a);
	return 0;
}

Pascal :

var
  n:longint;
begin
  readln(n);
  writeln('0');
end.

Java :

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
	
		Scanner s=new Scanner(System.in);
		int  x=s.nextInt();
		System.out.println(x/(x+x));
	}

}

Python :

print 0