#include <iostream>
#include <sstream>

using namespace std;

string s ;
int c1 , c2 ;

int main() {

    while(1)
    {
        cin >> s >> c1 >> c2 ;

        if(s[0]=='0'&&!c1&&!c2)
            break;

        for(auto &i:s)
            if(i-'0'==c1)
                i = c2+'0' ;
        stringstream ss ;
        ss << s ;
        int x ; ss >> x ;
        cout << x << endl ;

    }

	return 0;
}