#include <iostream>

using namespace std;

int main()
{
    int n,c1,c2,m,c,p;
    cin>>n>>c1>>c2;
    while((n!=0)&&(c1!=0)&&(c2!=0))
    {
        p=1;
        m=0;
        while(n)
        {
            c=n%10;
            n=n/10;
            if(c==c1)
                    m=m+p*c2;
            else
                    m=m+p*c;
            p=p*10;
        }
        cout<<m<<endl;
        cin>>n>>c1>>c2;
    }
    return 0;
}