#include <iostream>

using namespace std;


int main()
{int n,c1,c2,x=0,m,v[100],i,ending=1;
while (ending!=0)
{
    cin>>n>>c1>>c2;
    if((n==0)&&(c1==0)&&(c2==0))
     ending=0;
    else
    {
        m=n;
while(m!=0)
{m=m/10;
x=x+1;}
for(i=1;i<=x;i++)
{v[i]=n%10;

n=n/10;
if(v[i]==c1)
v[i]=c2;

}
cout<<endl;
n=0;
for(i=x;i>=1;i--)
{n=n*10;
n=n+v[i];
}
x=0;
cout<<n<<endl;
}



}
return 0;
}