#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
    string n;
    int c1, c2;
    while (cin >> n >> c1 >> c2)
    {
        if (n == "0" && c1 == 0 && c2 == 0)
        {
            break;
        }

        replace(n.begin(), n.end(), c1 + '0', c2 + '0');
        char c = n[0];
        while (c == '0')
        {
            n.erase(n.begin());
            c = n[0];
        }
        cout << n << "\n";
    }
    return 0;
}