str_a = input()
str_b = input()

list_a = list(str_a)
list_b = list(str_b)
can_rearrange = True

for a, c_a in enumerate(list_a):
	for b, c_b in enumerate(list_b):
		if c_a == c_b:
			list_b[b] = " "
			break
	else:
		can_rearrange = False
		
if can_rearrange:
	print("YES")
else:
	print("NO")