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

int main()
{
	int numar1, numar2;
	char numarul[6];
	do
	{
		scanf("%s %d %d", &numarul, &numar1, &numar2);
		if (numarul[0] == '0' && !numar1 &&!numar2 && strlen(numarul) == 1)
		{
			break;
		}


		for (int i = 0; i < strlen(numarul); i++)
		{
			if (numarul[i] - '0' == numar1)
			{
				numarul[i] = numar2 + '0';
			}
		}


		int ok = 0;


		for (int i =0; i  <  strlen(numarul); i++)
		{
			if (ok  ||  numarul[i] !=   '0')
			{
				printf("%c",   numarul[i]);
				ok = 1;
			}
		}

		printf("\n");
	} while (1);


	return 0;
}