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