Advertisement
GRAPEX

Untitled

Jan 30th, 2021
15
0
Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 0.57 KB | None | 0 0
  1. import collections
  2.  
  3. de = collections.deque()
  4.  
  5. f1 = open("output.txt", "w")
  6. with open("input.txt") as f:
  7. for i in range(1):
  8. x = f.readline()
  9. x = int(x)
  10. q = 0
  11. for j in range(x):
  12. q += 1
  13. for k in range(q):
  14. a = f.readline().split()
  15. if a == 1 or a == 2:
  16. a, b = f.readline().split()
  17. if a == 1:
  18. de.appendleft(b)
  19. elif a == 2:
  20. de.append(b)
  21. elif a == 3:
  22. b = str(b)
  23. f1.write(b + " ")
  24. b = int(b)
  25. de.popleft()
  26. elif a == 4:
  27. b = str(b)
  28. f1.write(b + " ")
  29. b = int(b)
  30. de.pop()
  31.  
  32. f.close()
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement