11 lines
202 B
Python
11 lines
202 B
Python
N, r, c = map(int, input().split())
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Z = lambda r, c: r * 2 + c
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S = 0
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for i in range(N - 1, -1, -1):
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S += (4 ** i) * Z(r // (2 ** i), c // (2 ** i))
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r, c = r % (2 ** i), c % (2 ** i)
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print(S)
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