#include <iostream>

using namespace std;
long long n,x,y;

int main()
{
    cin>>n>>x>>y;
    while(x || y || n )
    {   int pas=0;
        int aux[6];
        while(n)
        {
            (n%10==x ? aux[pas++]=y : aux[pas++]=n%10);
            n/=10;
        }
        for(int i=pas-1;i>=0;i--)
            cout<<aux[i];
        cout<<'\n';
        cin>>n>>x>>y;
    }
    return 0;
}