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