#include<fstream.h>
int s[10]
int mod(int A[], int B, int L)
	{
	int i,t=0;
	for(i=L;i>0;i--)
		t=(t*10+A[i])%B;
	return t;
	}
void main()
{
ifstream f("bipal.in");
ofstream g("bipal.out");
f>>n>>m;
int q=n/2,q1=0;
if(q%2==1){q+=2;q1=1;}
s[1]=0;
while(k>0)
	if(s[k]<8)
		{
		s[k]++;
		if(k==q)
			{
			if(q1=0)
				{
				for(i=1;i<=n/4;i++){v[i]=s[i];v[n/2-i+1]=s[i];}
				for(i=n/4+1;i<=n/2;i++)
					{v[n/4+i]=s[i];v[n-i+1+n/4]=s[i];}
				if(mod(v,m,n)==1)for(i=1;i<=n;i++)cout<<v[i];
				}
			if(q1=1)
				{
				for(i=1;i<=q/2;i++){v[i]=s[i];v[q-i]=s[i];}
				for(i=q/2+1;i<=q;i++)
					{v[q]=s[i];
				}
			}
		else {k++;s[k]=-1;}
		}
	else k--;
}