#include <iostream>
#include <fstream>
#include <string>
#include <map>
#include <cmath>
#include <set>
#define DN 100005
#define LL long long

using namespace std;

int main(){
	int ok;
	string n;
	char c1, c2;
	//freopen("input.txt", "r", stdin);
	cin >> n >> c1 >> c2;
	while(n != "0" || c1 != '0' || c2 != '0'){
		ok = 0;
		for(int i = 0; i < n.size(); ++i){
			if(n[i] == c1){
				if(!ok && c2 == '0')
					continue;
				cout << c2;
				if(c2 != '0')
					ok = 1;
			}
			else{
				if(!ok && n[i] == '0')
					continue;
				cout << n[i];
				if(n[i] != '0')
					ok = 1;
			}
		}
		if(!ok)
			cout << 0;
		cout << '\n';
		cin >> n >> c1 >> c2;
	}
	return 0;
}