#include <iostream>
using namespace std;
int main()
{
int n,c1,c2;
cin>>n>>c1>>c2;
while(n!=0 && c1!=0 && c2!=0)
{
int p=1,nr=0;
while(n)
{
if(n%10==c1)
nr=nr*p+c2;
else
nr=nr*p+n%10;
n/=10;
p=p*10;
}
cout<<nr<<"\n";
cin>>n>>c1>>c2;
}
}