#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;
        r=0;
        if(n==0)
            printf("%ld\n",c2);
        else{
        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;
}