#include <iostream>
using namespace std;

int valueS (int a)
{
	switch (a)
	{
		case 0:
		case 4:
		case 7:
			return 1;
		case 1:
		case 8:
			return 2;
		case 5:
			return 3;
		case 2:
			return 4;
		case 9:
			return 5;
		case 6:
			return 6;
		case 3:
			return 8;
	}
}

int main ()
{
	int A, B;
	cin>>A>>B;
	int kt=0, vS;
	for (int i=A+1; i<=62; i++)
	{
		if (i==46 || i==56) vS=7;
		else if (i==53) vS==9;
		else
		{
			int cs=i%10;
			vS=valueS(cs);
		}
		if (vS==B)
		{
			kt=1;
			cout<<i;
			return 0;
		}
	}
	cout<<"0";
	return 0;
}