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