#include<iostream>
using namespace std;
int i,a,b,n,z,q;
int main()
{
    q=2;
    cin>>n;
    while(q!=0)
    {
        if(n==0) break;
        cin>>a>>b;
        i=0;
        z=1;
        while(n>0)
        {
            if(n%10==a)
            {
                i=b*z+i;
            }
            else
            {
                i=(n%10)*z+i;
            }
            n=n/10;
            z=z*10;
        }
        cout<<i<<"\n";
        cin>>n;
    }
    return 0;
}