#include<stdio.h>

int replace(int n) 
{
    char str[20];
    sprintf(str,"%d",n);
    for (int i = 0; str[i]; i++) {
        if (str[i] =='0') str[i] ='1';
    }
    return atoi(str);
} 

int main()
{
    imt n;
    scanf("%d",replace(n));
    return 0;
}