61 lines
1.2 KiB
Python
61 lines
1.2 KiB
Python
def two(a, b):
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out = set([])
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out.add(a + b)
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out.add(a * b)
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'''if a != b:
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out.add(abs(a - b))'''
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out.add(a - b)
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out.add(b - a)
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if a != 0:
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out.add(b / float(a))
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if b != 0:
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out.add(a / float(b))
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return out
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def three(a, b, c):
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out = set([])
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for i in two(a, b):
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out |= two(i, c)
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for i in two(a, c):
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out |= two(i, b)
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for i in two(b, c):
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out |= two(i, a)
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return out
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def four(a, b, c, d):
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first = two(a, b)
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second = two(c, d)
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out = set([])
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for i in first:
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out |= three(i, c, d)
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for j in second:
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out |= two(i, j)
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for j in second:
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out |= three(j, a, b)
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return out
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def calc(a, b, c, d):
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tmp = set([])
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tmp |= four(a, b, c, d)
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tmp |= four(a, c, b, d)
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tmp |= four(a, d, b, c)
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out = []
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for i in tmp:
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if i == int(i) > 0:
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out.append(int(i))
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return sorted(out)
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maxx = [0, 0]
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for m in xrange(1, 10):
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for n in xrange(m + 1, 10):
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for s in xrange(n + 1, 10):
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for t in xrange(s + 1, 10):
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tmp = calc(m, n, s, t)
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for i in xrange(len(tmp)):
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if i + 1 != tmp[i]:
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break
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if i > maxx[0]:
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maxx = [i, (m, n, s, t)]
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print maxx
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