#include <iostream>
using namespace std;;
int number, c1, c2, k, aux, new_number, v[1001], i;

int main()
{
    while (cin>>number>>c1>>c2)
    {
        if (number==0 && c1==0 && c2==0)
        {
            break;
        }
        else
        {
            aux=number;
            new_number=0;
            k=0;
            while (aux!=0)
            {
                k++;
                aux/=10;
            }
            aux=number;
            for (i=0;i<k;i++)
            {
                v[k-i]=aux%10;
                aux/=10;
            }
            for (i=1;i<=k;i++)
            {
                if (v[i]==c1)
                    new_number=new_number*10+c2;
                else
                    new_number=new_number*10+v[i];
            }
            cout<<new_number<<'\n';
        }
    }
    return 0;
}