Bittilista

n, k = [int(x) for x in raw_input().split(" ")]
#print "{0:b}".format(2**n - 1)
 
#print "k=",k, "2**n=",2**n,
if k == 1:
	tul = "{1:b}".format(2**n)
	print tul[1:]
else:
	k = k -1
	t = 0
	while k > 0:
		a=0
		i=0
		while a < k:
			a = a + 2**i
			i = i + 1
#			print a, i
		
		t = t + 2**i
#		if 2*i**2 == 2**n:
#			t = 2**n + 1
#			k = k - 2**n
#			continue
		k = k - (a+1)/2
#		print "k=", k, "t=", t, "i=", i
#		print
#print a, i
	if t*2 >= 2**n:
#		print "dfsdgsdfgsd"
		t = t+1
	t = t + 2**n
	tul = "{0:b}".format(2**n)
	os = "{0:b}".format(t)
	te = tul+os
	print os[1:]
 
 
 
#if k > 2**n:
#	t = 2**n
#	k = k - 2**n
#	t = t + 1
#	k = 

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED