#include <stdio.h>
#include <stdlib.h>

int main()
{ int n,n2,c1,c2,i,p;
scanf("%d %d %d",&n,&c1,&c2);
while((n+c1+c2)!=0)
{
    i=1;
    n2=0;
    if(n!=0)
        {
            while (n!=0)
            {
            p=n%10;
            n=n/10;
            if(p==c1) p=c2;
            n2=n2+(i*p);
            i=i*10;
            }
            printf("%d\n",n2);
        }
    else if(c1==0) printf("%d\n",c2);
                else printf("%d\n",n);

    scanf("%d %d %d",&n,&c1,&c2);

}
return 0;
}