#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    int isNegative=0;
    if(n<0)
    {
        isNegative=1;
        n=-n;
    }
int digit,result=0,place=1;
    if(n==0)
    {
        result=1;
    }
        while(n>0)
        {
            int digit=n % 10;
            if (digit==0)
                digit=1;
                
                result=digit*place+result;
                place*=10;
                n\=10;
        }
        if(isNegative)
         result=-result;
         
         printf("%d",result);
         return 0;
}