import java.util.List;
import java.util.ArrayList;
import java.util.Scanner;
/*在一个有序数组中查找一个数的过程,模拟二分法查找,如果在左边区域就输出0,如果在右边区域就输出1,最后结果输出整个过程的1、0,精确度是6*/
public class base {
public static void main(String args[]){
Scanner cin = new Scanner(System.in);
int x = cin.nextInt();
int[] y = new int[181];
for(int i=0;i<181;i++){
y[i]=i-90;
}
List<Integer> z = search(x,y);
for(int i:z){
System.out.print(i);
}
}
public static List<Integer> search(int x,int[] R){
int length = R.length;
int mid,low=0,high=length-1;
ArrayList<Integer> temp = new ArrayList<Integer>();
while((high-low)>6){
mid=(high+low)/2;
if(x==R[mid]){
break;
}
if(x<R[mid]){
high=mid-1;
temp.add(0);
}else if(x>R[mid]){
low=mid+1;
temp.add(1);
}
}
return temp;
}
}