#include <iostream>

using namespace std;

int main()
{
    int n , c1, c2;
    cin>>n>>c1>>c2;

    while(n!=0 && c1!=0 && c2!=0){
int res=0;
int p=1;
        while(n>0)
            {
            int cifra;
                if(n%10==c1) cifra = c2;
                else cifra = n%10;

                res += p*cifra;
                p*=10;
                n/=10;
            }
        cout<<res<<'\n';

        cin>>n>>c1>>c2;

    }

    return 0;
}