x = int(input())
y = int(input())
z = int(input())
n = int(input())

list_in=[]



insert i e: Insert integer at position
.
print: Print the list.
remove e: Delete the first occurrence of integer
.
append e: Insert integer
at the end of the list.
sort: Sort the list.
pop: Pop the last element from the list.
reverse: Reverse the list.
