package 高中程式解題;
import java.util.*;
public class ex38{
public static void main(String[]args) {
Scanner sc = new Scanner(System.in);
while(sc.hasNext()) {
String x = sc.nextLine();
String ans = new StringBuffer(x).reverse().toString();
int n=0;
for(int i = 0 ; i <ans.length();i++) {
if(!ans.substring(i,i+1).equals("0")) {
System.out.println(ans.substring(i));
break;
}else {
n=n+1;
if(n==ans.length()) {
System.out.println("0");
}
}
}
}
}
}