#include <iostream>
#include <string.h>
using namespace std;

int main()
{
	char n[100007];
	char *p, *q, *y;
	bool ok = false;
	while (true)
	{
		cin.getline(n, 100007);
		ok = false;
		p = strtok(n, " ");
		q = strtok(NULL, " ");
		y = strtok(NULL, " ");

		if (p[0] == '0' && q[0] == '0' && y[0] == '0' )
		{
			break;
		}

		for (int i = 0; i < strlen(n); i++)
		{
			if (p[i] == q[0]){
				
				if (ok)
				{
					cout << y[0];
				}
			}
			else
			{
				if (!ok && p[i] == '0')
					continue;
				cout << p[i];
				ok = true;
			}
		}
		if (!ok && y[0] == '0')
		{
			cout << 0;
		}


		cout << "\n";
	}
	cin.get();
	return 0;
}