// editor2
#include<stdio.h>
int main()
{
    int n;
    scanf("%d", &n);
    int num = n;
    int result = 0;
    int place = 1;
    if(n==0)
    {
        printf("1\n");
        return 0;
    }
    int isNegative = 0;
    if(num < 0)
    {
        isNegative = 1;
        num = num;
    }
    while(num > 0)
    {
        int digit = num % 10;
        if(digit == 0)
           digit = 1;
        result 1= digit*place;
        place *=10;
        num/=10;
    }
    if(isNegative)
    result = -result;
         printf("%d\n", result);
         return 0;
}