#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main()
{
	char n[100001], c1, c2;
	int nr[16], l, i, k = 0;

	scanf("%s %c %c",n,&c1,&c2);

	while (strcmp(n,"0") != 0 || (c1-'0' != 0 && c2-'0' != 0) )
	{
		k++;

		l = strlen(n);

		for (i = 0; i < l; i++)
		{
			if (n[i] == c1)
			{
				n[i] = c2;
			}
		}

		nr[k] = strtol(n,NULL,10);

		scanf("%s %c %c",n,&c1,&c2);
	}

	for (i = 1; i <= k; i++)
	{
		printf("%d\n",nr[i]);
	}

	return 0;
}