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def curious_fraction(a, b):
a1 = a/10
a2 = a%10
b1 = b/10
b2 = b%10
result = 1.0*a/b;
if a2 == 0 or b2 == 0:
return False
if a1 == b1 and 1.0*a2/b2 == result:
return True
if a1 == b2 and 1.0*a2/b1 == result:
return True
if a2 == b1 and 1.0*a1/b2 == result:
return True
if a2 == b2 and 1.0*a1/b1 == result:
return True
return False
product = 1.0
for a in range(10, 100):
for b in range(a+1, 100):
if curious_fraction(a, b):
product *= 1.0*a/b
print int(1/product)
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