#include <iostream>
using namespace std;
int n,c1,c2,i,j,nr,nrnou,cif,a[100],ok=0;

int main()
{
    while(cin>>n)
    {
        cin>>c1;
        cin>>c2;
        if(n==0&&c1==0&&c2!=0)
        {
            cout<<c2<<'\n';
            ok=1;
        }
        if(n==0&&c1==0&&c2==0)
            return 0;
        if(ok==0)
        {
            while(n!=0)
            {
                cif=n%10;
                if(cif==c1)
                    cif=c2;
                a[i]=cif;
                i++;
                n=n/10;
            }
            for(j=i-1;j>=0;j--)
            {
                    nrnou=nrnou*10+a[j];
            }

            cout<<nrnou<<'\n';
            nrnou=0;
            i=0;
        }

    }




    return 0;
}