#include <iostream>

using namespace std;

int n, c1, c2, cif, putere, nr;

int main()
{
    cin>>n>>c1>>c2;
    while(n!=0||c1!=0||c2!=0)
    {
        nr=0; putere=1;
        if(n==0&&c1==0)
            nr=c2;
        while(n!=0)
        {
            cif=n%10;
            n/=10;
            if(cif==c1)
                cif=c2;
            nr=nr+cif*putere;
            putere*=10;
        }
        cout<<nr<<"\n";
        cin>>n>>c1>>c2;
    }
    return 0;
}