#include <iostream>

using namespace std;

int n,c1,c2;
int main(){
    while(1){
        cin>>n>>c1>>c2;
        if(n==0 && c1==0 && c2==0)
            break;
        int aux=n,x=0,p=1;
        while(aux!=0){
            if(aux%10==c1)
                x=x+p*c2;
            else
                x=x+p*(aux%10);
            aux/=10;
            p*=10;
        }
        cout<<x<<"\n";
    }
    return 0;
}