import java.util.Scanner;

public class prog {

    public static void main(String[] args) throws java.lang.Exception {
        Scanner scanner = new Scanner(System.in);
        for (int j = 0; ; j++) {
            String[] data = scanner.nextLine().split(" ");
            String n = data[0];
            String c1 = data[1];
            String c2 = data[2];
            if(n.equals("0") && c1.equals("0") && c2.equals("0")){
                break;
            }
            StringBuilder sb = new StringBuilder(n);
            for (int i = 0; i < n.length(); i++) {
                if((n.charAt(i)+"").equals(c1)){
                    sb.setCharAt(i, c2.charAt(0));
                }
            }
            System.out.println(Integer.parseInt(sb.toString()));
        }
        scanner.close();
    }
}