#include<fstream.h>
ifstream fin("sir.txt");

void main()
{ int x,k,a,b,c;
  char cif;
  fin>>x>>k;
  if(x==9) { a=1;b=2;}
  else if(x<9) a=b=1;
       else a=b=2;
  do {
	  c=a+b;
	  a=b;
	  b=c;
  } while (c<k);
  for(int i=1;i<=a;i++)
	{ fin>>cif;
	  cout<<cif;
	}
}