#include<stdio.h>
int replaceZerosWithOnes(int n)
{
    int result=0,multiplier=1;
    while (n !=0)
    {
        int digit=n % 10;
        if(digit==0)digit=1;
        result=digit*multiplier+result;
        multiplier*=10;
        n/=10;
    }
    return result;
}
int main()
{
    int n;
    scanf("%d",&n)!=1)
    printf("%d\n",replaceZeros(n));
    return 0;
}