#include <iostream>
//#include <fstream>

using namespace std;
int n, c1, c2, c, a[10], terminat, i, inceput;

//fstream f ("test.in",ios::in);
//fstream g("test.out", ios::out);
int main()
{
    terminat = 0;
    while (!terminat)
    {
        cin>>n>>c1>>c2;
        if ((n == 0) &&(c1 == 0) && (c2 == 0)) terminat = 1;
        else if ((n == 0) &&(c1 == 0)) cout << c2<< '\n';
        else if (n == 0) cout << n << '\n';
        else
        {
            c = 0;
            while (n!=0)
            {
                a[++c] = n % 10;
                n = n / 10;
                if (a[c] == c1) a[c] = c2;
            }
            inceput = 0;
            for (i = c; i >= 1; i--) {
                                        if (a[i]) inceput = 1;
                                        if (inceput) cout <<a[i];
            }
            cout << '\n';
        }
    }
    return 0;
}