#include <iostream>

using namespace std ;


string s1 ;
int c1, c2 ;
int number = 0;

int main()
{
    while(cin)
    {
        cin >> s1 >> c1 >> c2 ;

        if(s1 == "0" && c1 == 0 && c2 == 0)
            return  0 ;

        for(int i = 0 ; i < s1.size() ; ++ i)
            {if((s1[i] - '0') == c1)
                s1[i] = c2 + '0' ;
            }
            bool ok = false ;
            int cnt = 0 ;
            for(int i = 0 ; i < s1.size() ; ++ i)
            if(cnt == 0 && (s1[i] - '0') == 0){
                cnt = 0 ;
                continue ;

            }
            else {cout << s1[i] - '0' ;
               ok = true ;
                }


        if(ok == false)
            cout << 0 ;
            cout << '\n' ;




    }


    return  0 ;
}