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