39 lines
813 B
Python
39 lines
813 B
Python
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import sys
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R = dict() # registers
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for l in sys.stdin.readlines():
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v, k = l[:-1].split(' -> ')
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R[k] = v
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A = 2**16 -1 # FFFF
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def val(k:str) -> int:
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if k.isdigit():
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return int(k)
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v = R[k]
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if type(v) == int: # k is resolved
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return v
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r = None
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I = v.split(' ')
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if len(I) == 1:
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r = val(I[0])
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else:
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i = I[-2]
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if i == "AND":
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r = val(I[0]) & val(I[2])
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elif i == "OR":
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r = val(I[0]) | val(I[2])
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elif i == "LSHIFT":
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r = val(I[0]) << val(I[2])
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elif i == "RSHIFT":
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r = val(I[0]) >> val(I[2])
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elif i == "RSHIFT":
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r = val(I[0]) >> val(I[2])
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elif i == "NOT":
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r = ~ val(I[1])
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r &= A
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R[k] = r
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return r
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print(val(sys.argv[1]))
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