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  1. # your code goes here
  2. no_of_lines = int(input())
  3. stack = []
  4. flag = 0
  5. list1 = []
  6. # print('\n')
  7. for i in range(0, no_of_lines):
  8.     list1.append(str(input()))
  9. for i in range(0, no_of_lines):
  10.     # print(str(i))
  11.     alter = []
  12.     a = list1.pop(0)
  13.     if flag == 0:
  14.         if a[0] == 't':
  15.             if stack:
  16.                 alter = [int(a[8:])]
  17.                 stack = alter + stack
  18.             else:
  19.                 stack.append(int(a[8:]))
  20.         elif a[0] == 'p':
  21.             stack.append(int(a[10:]))
  22.         elif a[0] == 'b':
  23.             if stack:
  24.                 print(stack.pop())
  25.             else:
  26.                 print('No job for Ada?')
  27.         elif a[0] == 'f':
  28.             if stack:
  29.                 print(stack.pop(0))
  30.             else:
  31.                 print('No job for Ada?')
  32.         elif a[0] == 'r':
  33.             if len(stack) > 1:
  34.                 flag = 1
  35.             else:
  36.                 flag = 0
  37.     else:
  38.         if a[0] == 't':
  39.             stack.append(int(a[8:]))
  40.         elif a[0] == 'p':
  41.             if stack:
  42.                 alter = [int(a[10:])]
  43.                 stack = alter + stack
  44.             else:
  45.                 stack.append(int(a[8:]))
  46.  
  47.         elif a[0] == 'b':
  48.             if stack:
  49.                 print(stack.pop(0))
  50.                 if len(stack) < 2:
  51.                     flag = 0
  52.             else:
  53.                 print('No job for Ada?')
  54.         elif a[0] == 'f':
  55.             if stack:
  56.                 print(stack.pop())
  57.                 if len(stack) < 2:
  58.                     flag = 0
  59.             else:
  60.                 print('No job for Ada?')
  61.         elif a[0] == 'r':
  62.             flag = 0
  63.  
Success #stdin #stdout 0.02s 9252KB
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https://ideone.com/N9XWql
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
secret

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