import java.util.Scanner;

public class Test {

public static void main(String[] args) {
String str = null ;

Scanner in = new Scanner (System.in) ;

while(in.hasNextLine()) {
str =in.nextLine();

StringBuffer sb = new StringBuffer();
sb.append(str);
sb.reverse();
char word [] = sb.toString().toCharArray();
int len =word.length ;
int k=0;

for(int i=0;i<len;i++) {
if(word[i]=='0') k=i+1 ;
else break;

}

for(int i=k;i<len;i++) {
System.out.print(word[i]);
}
boolean flag =true ;

for(int i=0;i<len;i++) {
if(word[i]=='0') flag =true ;
else {
flag =false ;
break ;
}
}
if(flag==true) System.out.println(0);

}
in.close();
}
}