#include <iostream>
#include<vector>
#include<string>
#include<cstring>
#include<cmath>
#include<set>
#include<queue>
#include<bitset>
#include<cstdlib>
#include<cstdio>
#include<algorithm>
using namespace std;

int main()
{
    string s;
    char c1, c2;
    cin >> s >> c1 >> c2;

    while(true){
        if(s== "0"&&c1 == '0'&&c2 == '0' ){
                break;
        }
        replace( s.begin(), s.end(), c1, c2);
        cout << atoi(s.c_str()) << endl;
         cin >> s >> c1 >> c2;
    }
    return 0;
}