from collections import deque n=int(input()) d=deque() for i in range(n): s=input().split(" ") if s[0]=="append": d.append(int(s[1])) elif s[0]=="appendleft": d.appendleft(int(s[1])) elif s[0]=="clear": d.clear() elif s[0]=="count": d.count(int(s[1])) elif s[0]=="extend": d.extend(int(s[1])) elif s[0]=="extendleft": d.extendleft(int(s[1])) elif s[0]=="pop": d.pop() elif s[0]=="popleft": d.popleft() elif s[0]=="remove": d.remove(int(s[1])) elif s[0]=="reverse": d.reverse() elif s[0]=="rotate": d.rotate(int(s[1])) print(*d)