new
size 0
empty 1
push 3.5
push 4.7
push 2.1
size 3
empty 0
top 2.1
min 2.1
max 4.7
pop 2.1
top 4.7
min 3.5
max 4.7
pop 4.7
top 3.5
min 3.5
max 3.5
pop 3.5
top!
min!
max!
delete
summary