new
push 11
push 12
push 23
push 14
push 15
push 26
push 27
push 28
push 19
push 10
push 21
cout
pop 21
pop 10
pop 19
assign
	pop 28
	pop 27
	pop 26
	pop 15
	pop 14
	pop 23
	pop 12
	top 11
	size 1
	cout
	delete
exit
top 28
size 8
pop 28
pop 27
pop 26
pop 15
pop 14
pop 23
cout
delete
summary
exit