Buggy python submission (verdict: Runtime Error):
a=int(input())
list=[]

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.append(order[1])
    elif order[0]=="delete":
        list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.pop(0)
    elif order[0]=="deleteLast":
        list.pop(len(list)-1)

print(*list)


Fixed submission:
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.popleft()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)

Buggy python submission (verdict: Runtime Error):
a=int(input())
list=[]

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.pop(0)
    elif order[0]=="deleteLast":
        list.pop(len(list)-1)

print(*list)


Fixed submission:
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.popleft()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)

Buggy python submission (verdict: Runtime Error):
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.pop(0)
    elif order[0]=="deleteLast":
        list.pop(len(list)-1)

print(*list)


Fixed submission:
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.popleft()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)

Buggy python submission (verdict: Runtime Error):
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.pop()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)


Fixed submission:
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.popleft()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)

Buggy python submission (verdict: Runtime Error):
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.popleft()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)


Fixed submission:
from collections import deque
a=int(input())
list=deque([])

for i in range(a):
    order=input().split()
    if order[0]=="insert":
        list.appendleft(order[1])
    elif order[0]=="delete":
        if order[1] in list:
            list.remove(order[1])
    elif order[0]=="deleteFirst":
        list.popleft()
    elif order[0]=="deleteLast":
        list.pop()

print(*list)