42 lines
1.1 KiB
Python
42 lines
1.1 KiB
Python
with open('input14', 'r') as file:
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lines = [l.strip() for l in file.readlines()]
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def masks(m):
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m_reset = int(m.replace('X', '1'), 2)
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m_set = int(m.replace('X', '0'), 2)
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return m_reset, m_set
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mem = {}
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m_reset = 0xFFFFFFFFFFFFFFFF
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m_set = 0
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for line in lines:
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tokens = line.split()
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if tokens[0] == 'mask':
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m_reset, m_set = masks(tokens[-1])
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elif tokens[0][:3] == 'mem':
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mem[int(tokens[0][4:-1])] = int(tokens[-1]) & m_reset | m_set
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print(f'Part 1: {sum(mem.values())}')
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def mem_masks(m):
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return m_set, fork_str
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mem = {}
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fork_str = ''
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xs = 0
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m_set = 0
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for line in lines:
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tokens = line.split()
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if tokens[0] == 'mask':
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fork_str = tokens[-1] #.replace('X', '{}')
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xs = fork_str.count('X')
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m_set = int(tokens[-1].replace('X', '0'), 2)
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elif tokens[0][:3] == 'mem':
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val = int(tokens[-1])
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addr = f'{int(tokens[0][4:-1]) | m_set:036b}'
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addr = ''.join(['{}' if f=='X' else c for c,f in zip(addr, fork_str)])
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addrs = [addr.format(*f'{i:0{xs}b}') for i in range(2**xs)]
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for a in addrs:
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mem[a] = val
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print(f'Part 2: {sum(mem.values())}')
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