#include<cstdio>
#include<fstream>
#include<iostream>
#include<iomanip>
#include<algorithm>
#include<vector>
#include<bitset>
#include<deque>
#include<queue>
#include<set>
#include<map>
#include<cmath>
#include<cstring>
#include<ctime>
#include<cstdlib>
#include<unordered_map>

#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define pll pair<ll,ll>
#define all(x) (x).begin(), (x).end()
#define fi first
#define se second

using namespace std;

int i, n, nr;
char c1, c2;
string s;

int main()
{
    cin.sync_with_stdio(false);

    //    freopen("test.in", "r", stdin);
//    freopen("test.out", "w", stdout);

    for(;;)
    {
        cin >> s >> c1 >> c2;
        if(s[0] == '0' && c1 == '0' && c2 == '0') break;

        n = s.size();
        for(i = 0; i < n; i++)
            if(s[i] == c1)
                s[i] = c2;

        nr = 0;
        for(i = 0; i < n; i++)
            nr = nr * 10 + s[i] - '0';

        cout << nr << '\n';
    }

    return 0;
}