#include <iostream>
#include <fstream>
#include <cmath>
#define ull unsigned long long int
using namespace std;
int main()
{
   int c1,c2,n;
   cin>>n>>c1>>c2;
   while(!((n==0)&&(c1==0)&&(c1==c2)))
   {
       int cop = 0,p=1;
       while(n)
       {
           if(n%10==c1)
              cop = c2*p+cop;
           else
              cop = (n%10)*p+cop;
           n/=10;
           p *=10;
       }
       int pu = (int)(floor(log10l(cop)));
       p =(int) round(pow(10,pu));
       if (p==0)
           cout<<0<<endl;
       while(p)
       {
           cout<<(cop/p)%10;
           p /=10;
       }
       cout<<"\n";
       cin>>n>>c1>>c2;
   }
    return 0;
}