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

int main()
{
int c1, c2;
char n[6];
	do
	{
		scanf("%s %d %d",&n,&c1,&c2);
		for (int i = 0; i < strlen(n); i++)
		{
			if (n[i] - '0' == c1)
			{
				n[i] = c2 + '0';
			}
		}
		int ok = 0;
		for (int i = 0; i < strlen(n); i++)
		{
			if (ok || n[i]!= '0')
			{
				printf("%c", n[i]);
				ok = 1;
			}
		}
		printf("\n");
	} while (n[0] !='0' ||c1 || c2);
	return 0;
}