#include<iostream>

int main()
{
	int n, c1, c2, aux,inv;
	int c[100],k;

	scanf("%d %d %d", &n, &c1, &c2);

	while (!(n == 0 && c1 == 0 && c2 == 0))
	{
		k = 0;
		while (n > 0)
		{
			if (n % 10 == c1)
			{
				c[k] = c2;
				k++;
				n = n / 10;
			}
			else
			{
				c[k] =  n % 10;
				k++;
				n = n / 10;
			}
		}
		for (int i = k-1; i >=0; i--)
		{
			if (i == k - 1 && c[i] == 0)
			{
				continue;
			}
			printf("%d", c[i]);
		}
		scanf("%d %d %d", &n, &c1, &c2);
	}

	return 0;
}