// iostream is too mainstream
#include <cstdio>
// bitch please
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <list>
#include <cmath>
#include <iomanip>
#include <time.h>
#define dibs reserve
#define OVER9000 1034567890
#define ALL_THE(CAKE,LIE) for(auto LIE =CAKE.begin(); LIE != CAKE.end(); LIE++)
#define tisic 47
#define soclose 1e-9
#define chocolate win
// so much chocolate
#define patkan 9
#define ff first
#define ss second
#define abs(x) ((x < 0)?-(x):x)
#define uint unsigned int
#define dbl long double
using namespace std;
// mylittledoge

int main() {
	cin.sync_with_stdio(0);
	cin.tie(0);
	string n;
	int c1,c2;
	while(cin >> n >> c1 >> c2) {
		if(n == "0" && c1+c2 == 0) return 0;
		for(int i =0; i < n.length(); i++) if(n[i] == '0'+c1) n[i] ='0'+c2;
		reverse(n.begin(),n.end());
		while(n.size() > 1 && *n.rbegin() == '0') n.erase(n.end()-1);
		reverse(n.begin(),n.end());
		cout << n << "\n";}
	return 0;}

// look at my code
// my code is amazing