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