#include <bits/stdc++.h>

using namespace std;

int main() {
    int c1, c2;

    while (1) {
        char n[10];
        cin >> n >> c1 >> c2;
        if (!strcmp(n, "0") && !c1 && !c2)
            break;

        for (int len = strlen(n), i = 0; i < len; i++) {
            if (n[i] - '0' == c1)
                n[i] = '0' + c2;
        }

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

    return 0;
}