#include <cstdio>

using namespace std;
int rasturnat (int n)
{
    int p=0;
    while(n>0)
    {
        p=p*10+n%10;
        n=n/10;
    }
    return p;
}
int schimb(int n,int a,int b)
{
    int c=0;
    n=rasturnat(n);
    while(n>0)
    {
        if(n%10==a)
            c=c*10+b;
        else
            c=c*10+n%10;
        n=n/10;
    }
    return c;
}
int main()
{
    int n,c1,c2;
    while(n>0)
    {
        scanf("%d%d%d",&n,&c1,&c2);
        if(n==0)
            return 0;
        printf("%d\n",schimb(n,c1,c2));
    }
}