55 lines
1.5 KiB
Python
55 lines
1.5 KiB
Python
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def validate_int(value, mi, ma):
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value = int(value)
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return mi <= value <= ma
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def validate_height(value):
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v = int(value[:-2])
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t = value[-2:]
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if (t == "cm" and 150<=v<=193) or (t == "in" and 59<=v<=76):
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return True
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return False
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def validate_hex(h):
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return h[0] == "#" and len(h[1:]) == 6 and is_int(h[1:], base=16)
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def is_int(x, base=10):
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try:
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int(x, base=base)
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except ValueError:
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return False
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return True
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validators = {
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'byr': lambda x: validate_int(x, 1920, 2002),
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'iyr': lambda x: validate_int(x, 2010, 2020),
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'eyr': lambda x: validate_int(x, 2020, 2030),
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'hgt': lambda x: validate_height(x),
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'hcl': lambda x: validate_hex(x),
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'ecl': lambda x: x in ['amb', 'blu', 'brn', 'gry', 'grn', 'hzl', 'oth'],
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'pid': lambda x: len(x) == 9 and is_int(x)
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}
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def validate(entry, required_fields):
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for field in required_fields:
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if field not in entry or not validators[field](entry[field]):
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return False
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return True
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entries = [{}]
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index = 0
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with open("input") as f:
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for line in f:
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line = line.strip()
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if not line:
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entries.append({})
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index = index + 1
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else:
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for entry in line.split(" "):
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key, value = entry.split(":")
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entries[index][key] = value
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required = ['byr', 'iyr', 'eyr', 'hgt', 'hcl', 'ecl', 'pid']
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print(list(map(lambda x: validate(x, required), entries)).count(True))
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