27 lines
679 B
Python
27 lines
679 B
Python
Mem = [[[None for _ in range(50)] for _ in range(50)] for _ in range(50)]
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def w(a, b, c):
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if a <= 0 or b <= 0 or c <= 0:
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return 1
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elif Mem[a - 1][b - 1][c - 1] is not None:
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return Mem[a - 1][b - 1][c - 1]
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t = 0
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if a > 20 or b > 20 or c > 20:
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t = w(20, 20, 20)
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elif a < b < c:
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t = w(a, b, c - 1) + w(a, b - 1, c - 1) - w(a, b - 1, c)
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else:
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t = w(a - 1, b, c) + w(a - 1, b - 1, c) + w(a - 1, b, c - 1) - w(a - 1, b - 1, c - 1)
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Mem[a - 1][b - 1][c - 1] = t
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return t
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while True:
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a, b, c = map(int, input().split())
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if a == b == c == -1:
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break
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print(f"w({a}, {b}, {c}) = {w(a, b, c)}")
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