#include<stdio.h>
int main()
{
    long long n;
    scanf("%11d", &n);
    long long isNegative = 0;
    if(n<0)
    {
        isNegative = 1;
        n =-n;
    }
    long long result = 0,place=1;
    if(n==0)
    {
        result = 1;
    }
    else
    {
        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("%11d",result);
    return 0;
}