#include<stdio.h>
#include<cstring>
using namespace std;
long n, c1, c2, r, r1, c;
int main()
{
    while (1)
    {
        scanf("%ld %ld %ld",&n,&c1,&c2);
        if ((n==0)&&(c1==0)&&(c2==0))
            break;
        if ((n==0)&&(c1==0))
            printf("%ld\n",c2);
        else
        {
            r=0;
            while (n)
            {
                r=r*10+n%10;
                n/=10;
            }
            n=r;    r=0;
            while (n)
            {
                c=n%10; n=n/10;
                if (c==c1)
                    c=c2;
                r=r*10+c;
            }
            printf("%ld\n",r);
        }
    }
    return 0;
}