text: import os, sys, math
  
  open_bracket_types = ['(','[','{','<']
  close_bracket_types = [')',']','}','>']
  
  scores = [1, 2, 3, 4]
  
  def main():
  	completions = []
  	with open("input.txt", 'r') as file:
  		for line in file.readlines():
  			incomplete = False
  			stack = []
  			for i in range(len(line)):
  				if(line[i] in open_bracket_types):
  					stack.append(line[i])
  				if(line[i] in close_bracket_types):
  					index = close_bracket_types.index(line[i])
  					if(stack.pop() != open_bracket_types[index]):
  						incomplete = True
  						break
  			if(len(stack) > 0 and incomplete == False):
  				l_completion = []
  				while(len(stack) > 0):
  					c = stack.pop()
  					index = open_bracket_types.index(c)
  					l_completion.append(close_bracket_types[index])
  				completions.append(l_completion)
  
  	# calculate scores
  	result = []
  	for i in range(len(completions)):
  		temp_score = 0
  		for c in completions[i]:
  			index = close_bracket_types.index(c)
  			temp_score = temp_score*5 + scores[index]
  		result.append(temp_score)
  
  	result.sort()
  
  	for i in range(len(result)):
  		print(str(i) + ": " + str(result[i]))
  
  	print("Syntax Error Score: " + str(result[math.floor(len(result)/2)]))
  
  
  if __name__ == "__main__":
  	sys.exit(main())
  
  