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  1. L=[]
  2. while True:
  3.     big=0
  4.     small=0
  5.     a=input()
  6.     var=True
  7.     if (a=='.'):
  8.         break
  9.     else:
  10.         temp=[]
  11.         var=True
  12.         for x in a:
  13.             if x=='.':
  14.                 break
  15.             if x=='[':
  16.                 big+=1
  17.                 temp.append(x)
  18.             elif x==']':
  19.                 big-=1
  20.                 temp.append(x)
  21.             elif x=='(':
  22.                 small+=1
  23.                 temp.append(x)
  24.             elif x==')':
  25.                 small-=1
  26.                 temp.append(x)
  27.             if big<0 or small<0:
  28.                 var=False
  29.                 break
  30.     for k in range(len(temp)-1):
  31.         if( temp[k]=='(' and temp[k+1]==']') or ( temp[k]=='[' and temp[k+1]==')'):
  32.             var=False
  33.     if big==0 and small==0 and var==True:
  34.         L.append('yes')
  35.     else:
  36.         L.append('no')    
  37. for i in L:
  38.     print(i)
Success #stdin #stdout 0.02s 9168KB
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yes
https://ideone.com/Y5yHR0
language:
Python 3 (python  3.9.5)
created:
4 years ago
visibility:
public

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