#include <iostream>

using namespace std;
long n,c1,c2,inv;
int main()
{cin>>n;
  cin>>c1;
  cin>>c2;
    while(n || c1 || c2)
  {
 long m=0,k=0;
  while(n)
    {
    if(n%10==c1)
        m=m*10+c2;
        else
            m=m*10+n%10;
        n=n/10;
        k++;}
        inv=0;
    while(m)
    {
        inv=inv*10+m%10;
        m=m/10;k--;
    }
    while(k)
       {
           inv=inv*10;
           k--;
       }
     cout<<inv<<endl;
     cin>>n;
  cin>>c1;
  cin>>c2;}
     return 0;



}