#include <iostream>
#include <string.h>
#include <istream>

using namespace std;

int main(){
    int c1,c2,i,x;
    int a[100000];
    long n,m;
    cin>>n;cout<<' ';cin>>c1;cout<<' ';cin>>c2;
    while((n+c1+c2)!=0){
    m=n;
    cout<<n%10;
    n=n/10;
    while(m!=0){
    m=m/10;
    x++;}
    while(n!=0){
        for(i=2;i<=m;i++){
            a[i]=n%10;
            n=n/10;
            if(a[i]==c1)
            a[i]=c2;
            cout<<a[i];
        }
    }
    cin>>n;cout<<' ';cin>>c1;cout<<' ';cin>>c2;
    }
}