#include <iostream>

using namespace std;

int main() {

	int n = 1, c1 = 1, c2 = 1;

    while (n || c1 || c2) {

		cin >> n >> c1 >> c2;

		if (!n && !c1 && !c2)
			break;

		int newNumber = 0, digitsQ = 0, digits[6];

        while (n) {

			if (n % 10 == c1) {

				digits[digitsQ++] = c2;
			}
			else {

				digits[digitsQ++] = n % 10;
			}

			n /= 10;
        }

		for (int i = digitsQ - 1; i >= 0; --i) {

			newNumber *= 10;
			newNumber += digits[i];
		}

        cout << newNumber << endl;
	}

    return 0;
}