a[120],b[120];i,j,l,s;main(k,n,m){for(scanf("%d%d",&n,&m);i<101;k=printf(i++?"%d":"%d.",a[i]))for(a[i]=10;~k;s=0)for(a[i]--,bcopy(a,b,480),k=n;k--&&s<m;)for(j=120,s=0;l=j--;b[j]=j?s%10:s)for(s/=10;l--;)s+=a[l]*b[j-l];}