#include <iostream>
using namespace std;
int n,c1,c2;
int main()
{
    do
    {
        cin>>n>>c1>>c2;
        if(n==0&&c1==0&&c2==0)break;
        int aux = 0,p = 1;
        do
        {
            if(n%10==c1)aux = aux+c2*p;
            else aux = aux+(n%10)*p;
            n/=10;
            p*=10;
        }while(!(n==0));
        cout<<aux<<'\n';
    }while(!(n==0&&c1==0&&c2==0));
    return 0;
}