#include<iostream>
#include<string>
using namespace std;
int main(){
	freopen("date.in","r",stdin);
	string S;
	int a,b;
	cin >> S >> a >> b;
	while(!(S!="0" && !a && !b)){
		for(size_t i=0;i<S.size(); ++i){
			if(S[i] == a+'0')
				S[i]= b+'0';
		}
		while (S.size() && S[0] == '0')
			S = S.substr(1, S.size()-1);
		cout << S << "\n";
		cin >> S >> a >> b;
	}
	
	return 0;
}