new
push 5
push 6.3
top 6.3
pop 6.3
delete
new: 3
push 1
push 2
push 3
size 3
push 4.3
size 3
pop 4.3
pop 3
assign
	pop 2
	empty 1
	delete
exit
empty 0
pop 2
empty 1
delete
summary