#include <iostream>
#include <vector>

using namespace std;

void splitInDigits(long n, vector<long> &x)
{
	while (n != 0)
	{
		x.push_back(n % 10);
		n = n / 10;
	}
}


int main()
{
	int t = 0;
	long n;
	int c1, c2;

	while (t < 15)
	{
		int count = 0;
		cin >> n >> c1 >> c2;
		if (n == 0 && c1 == 0 && c2 == 0)
			break;

		vector<long> v;
		splitInDigits(n, v);
		for (long i = 0; i < v.size(); i++)
		{
			if (v[i] == c1)
				v[i] = c2;
		}
		for (long i = v.size() - 1; i >= 0; i--)
		{

			while (v[i] == 0 && count < 1)
			{
				i--;
			}

			if (i >= 0)
			{
				cout << v[i];
				count++;
			}
		}

		t++;

	}

	return 0;
}