#include <iostream>

using namespace std;

int main() {

	int n, c1, c2;
	cin >> n >> c1 >> c2;
	bool first = true;

    while (n || c1 || c2) {

		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];
		}

		if (first) cout << newNumber;
        else cout << endl << newNumber;

		cin >> n >> c1 >> c2;
	}

    return 0;
}