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48 lines
1004 B
48 lines
1004 B
3 years ago
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openList = "(", "[", "{", "<"
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closeList = ")", "]", "}", ">"
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scores1 = 3, 57, 1197, 25137
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def readLines():
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with open("input") as file:
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return file.read().splitlines()
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def solve1(lines):
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counts = [0, 0, 0, 0]
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for line in lines[:]:
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stack = []
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for char in line:
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if char in openList:
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stack.append(char)
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else:
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last = stack.pop()
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closingIndex = closeList.index(char)
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valid = closingIndex == openList.index(last)
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if not valid:
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counts[closingIndex] += 1
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lines.remove(line)
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break
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return sum([s * c for s, c in zip(scores1, counts)]), lines
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def solve2(lines):
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scores = []
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for line in lines:
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stack = []
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for char in line:
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stack.append(char) if char in openList else stack.pop()
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stack.reverse()
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score = 0
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for val in stack:
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score *= 5
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score += openList.index(val) + 1
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scores.append(score)
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scores.sort()
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return scores[len(scores) // 2]
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task1Score, incompleteLines = solve1(readLines())
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print(task1Score)
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print(solve2(incompleteLines))
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