#include <cstdio>
#include <cstring>

int main ()
{
    //freopen ("date.in", " r", stdin);
    int c1, c2;
    char n[10];

    while (1)
    {
        scanf ("%s%d%d", n, &c1, &c2);
        if (c1 == c2 && c1 == 0 && n[0] == '0')
            break;

        int l = strlen (n);
        bool ok = false;
        for (int i = 0; i < l; ++i)
        {
            if (n[i] == '0' + c1)
                n[i] = '0' + c2;
            if (n[i] != '0') ok = true, printf ("%c", n[i]);
            else if (ok) printf ("0");
        }
        printf ("\n");
    }

    return 0;
}