#include <iostream>
using namespace std;

int main(){
	int n;
	int ncpy;
	int c1;
	int c2;
	cin>>n;
	ncpy=n;
	cin>>c1;
	cin>>c2;
	while(1){
		int k=1;
		if(!n){
			n=c2;
		}
		while(ncpy){
			if(ncpy%10==c1){
				n=n-k*c1+k*c2;
			}
			ncpy/=10;
			k*=10;
		}
		cout<<n<<endl;
		cin>>n;
		ncpy=n;
		cin>>c1;
		cin>>c2;
		if(!n && !c1 && !c2){
			break;
		}
	}
	return 0;
}