#include<iostream>
using namespace std;

int v[3][15];
int  x, hatv, db;

void read(int i)
{
	cin >> v[0][i];
	cin >> v[1][i];
	cin >> v[2][i];
	
}

int main()
{	
	db = 0;
	read(db);

	while (v[0][db]!=0){
		db++;
		read(db);
	}

	for (int i = 0; i < db; i++)
	{
			
		x = 0;
		hatv = 1;
		while (v[0][i] != 0)
		{
			if (v[0][i] % 10 == v[1][i]) {
				x += v[2][i] * hatv;
			}
			else x += v[0][i]%10 * hatv;

			v[0][i] /= 10;
			hatv *= 10;
		}
		cout << x << endl;
	}

	return 0;
}