#include <iostream>
using namespace std;

int v[10];

int main () {
    int n, c1, c2;
    cin >> n >> c1 >> c2;
    while (n || c1 || c2) {
        int nc = 0;
        while (n) {
            v[nc++] = n % 10;
            n /= 10;
        }
        int sol = 0;
        for (int i = nc - 1 ; i >= 0 ; --i) {
            if (v[i] == c1)
                sol = (sol * 10) + c2;
            else
                sol = (sol * 10) + v[i];
        }

        cout << sol << "\n";
        cin >> n >> c1 >> c2;
    }

    return 0;
}