#include <iostream>
using namespace std;
int des9(char* s3, int cc)
{
	int i; int des = 0;
	for (i = 1; i < cc; i++)
	{
		des += (s3[i] - '0') * pow(3, cc - i - 1);
	}
	return des;
}
int counter(char* s)
{
	int cc = 0;
	while (s[cc] != '\0')
	{
		cc++;
	}
	return cc;
}
char *zapol(char* a, int s1)
{
	int i, j;
	for (i = s1 - 1, j = 8; i > 0; i--, j--)
	{
		a[j] = a[i];
	}
	for (i = 1; i <= (9 - s1); i++)
	{
		a[i] = '0';

	}
	a[9] = '\0';
	return a;
}
char* prisv(char* a,char *c)
{
	int i;
	if (a[0] == '+')
	{
		for (i = 0; i < 9; i++)
			c[i] = a[i + 1];
	}
	if (a[0] == '-')
	{
		for (i = 1; i < 9; i++)
		{
			if (a[i] == '0') c[i - 1] = '1';
			else if (a[i] == '1') c[i - 1] = '0';
			c[8] = '\0';
		}
	}
	return c;
}
int *summ(char* c, char* d, int* e, char* a, char* b, int mod1, int mod2)
{
	int i;
	for (i = 7; i >= 0; i--)
	{
		e[i] = (c[i] - '0') + (d[i] - '0');
		if (e[i] == 2)
		{
			e[i] = 0;
			if (i == 0) break;
			c[i - 1] = c[i - 1] + 1;
		}
		if (e[i] == 3)
		{
			e[i] = 1;
			if (i == 0) break;
			c[i - 1] = c[i - 1] + 1;
		}
	}
	if ((a[0] == '-' && (abs(mod1) < abs(mod2))) || (b[0] == '-' && (abs(mod1) > abs(mod2))) || ((a[0] == '-' && b[0] == '-')))
	{
		e[7] = e[7] + 1;;
		for (i = 7; i >= 0; i--)
		{
			if (e[i] == 2)
			{
				e[i] = 0;
				e[i - 1] = e[i - 1] + 1;
			}
			if (e[i] == 3)
			{
				e[i] = 1;
				e[i - 1] = e[i - 1] + 1;
			}
		}
	}
	return e;
}
int main()
{
	int  i, s1, s2,j,k=0,mod1,mod2;
	char a[25], b[25], c[25], d[25];
	int e[25];
	cin >> a >> b;
	s1 = counter(a);
	s2 = counter(b);
	mod1 = des9(a, s1);
	mod2 = des9(b, s2);
	if (s1 > 8 || s2 > 8) return 0;
	if (s1 == s2)
	{
		for (i = 0; i < s1; i++)
		{
			if (a[i] == b[i]) k++;
			if ((a[0] != b[0]) && (k == (s1 - 1)))
			{
				cout << "0";
				return 0;
			}
		}
	}
	if (s1 < 9)
	zapol(a, s1);
	if (s2 < 9)
	zapol(b, s2);
	prisv(a, c);
	prisv(b, d);
	summ(c, d, e, a, b, mod1, mod2);
	if (e[0] == 1)
	{
		for (i = 1; i < 8; i++)
		{
			if (e[i] == 0) e[i] = 1;
			else if (e[i] == 1) e[i] = 0;

		}
		for (i = 0; i < 8; i++)
			cout << e[i];
		return 0;
	}

	for (i = 0; i < 8; i++)
		cout << e[i];
	return 0;
}