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* Copyright (C) 2019 The FindStatCrew <info@findstat.org> *
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-----------------------------------------------------------------------------
Statistic identifier: St001434
-----------------------------------------------------------------------------
Collection: Signed permutations
-----------------------------------------------------------------------------
Description: The number of negative sum pairs of a signed permutation.
The number of negative sum pairs of a signed permutation $\sigma$ is:
$$\operatorname{nsp}(\sigma)=\big|\{1\leq i < j\leq n \mid \sigma(i)+\sigma(j) < 0\}\big|,$$
see [1, Eq.(8.1)].
-----------------------------------------------------------------------------
References: [1] Björner, A., Brenti, F. Combinatorics of Coxeter groups [[MathSciNet:2133266]]
-----------------------------------------------------------------------------
Code:
def statistic(pi):
pi = list(pi)
n = len(pi)
return sum(1 for i in range(n) for j in range(i+1,n) if pi[i] + pi[j]<0)
-----------------------------------------------------------------------------
Statistic values:
[1] => 0
[-1] => 0
[1,2] => 0
[1,-2] => 1
[-1,2] => 0
[-1,-2] => 1
[2,1] => 0
[2,-1] => 0
[-2,1] => 1
[-2,-1] => 1
[1,2,3] => 0
[1,2,-3] => 2
[1,-2,3] => 1
[1,-2,-3] => 3
[-1,2,3] => 0
[-1,2,-3] => 2
[-1,-2,3] => 1
[-1,-2,-3] => 3
[1,3,2] => 0
[1,3,-2] => 1
[1,-3,2] => 2
[1,-3,-2] => 3
[-1,3,2] => 0
[-1,3,-2] => 1
[-1,-3,2] => 2
[-1,-3,-2] => 3
[2,1,3] => 0
[2,1,-3] => 2
[2,-1,3] => 0
[2,-1,-3] => 2
[-2,1,3] => 1
[-2,1,-3] => 3
[-2,-1,3] => 1
[-2,-1,-3] => 3
[2,3,1] => 0
[2,3,-1] => 0
[2,-3,1] => 2
[2,-3,-1] => 2
[-2,3,1] => 1
[-2,3,-1] => 1
[-2,-3,1] => 3
[-2,-3,-1] => 3
[3,1,2] => 0
[3,1,-2] => 1
[3,-1,2] => 0
[3,-1,-2] => 1
[-3,1,2] => 2
[-3,1,-2] => 3
[-3,-1,2] => 2
[-3,-1,-2] => 3
[3,2,1] => 0
[3,2,-1] => 0
[3,-2,1] => 1
[3,-2,-1] => 1
[-3,2,1] => 2
[-3,2,-1] => 2
[-3,-2,1] => 3
[-3,-2,-1] => 3
[1,2,3,4] => 0
[1,2,3,-4] => 3
[1,2,-3,4] => 2
[1,2,-3,-4] => 5
[1,-2,3,4] => 1
[1,-2,3,-4] => 4
[1,-2,-3,4] => 3
[1,-2,-3,-4] => 6
[-1,2,3,4] => 0
[-1,2,3,-4] => 3
[-1,2,-3,4] => 2
[-1,2,-3,-4] => 5
[-1,-2,3,4] => 1
[-1,-2,3,-4] => 4
[-1,-2,-3,4] => 3
[-1,-2,-3,-4] => 6
[1,2,4,3] => 0
[1,2,4,-3] => 2
[1,2,-4,3] => 3
[1,2,-4,-3] => 5
[1,-2,4,3] => 1
[1,-2,4,-3] => 3
[1,-2,-4,3] => 4
[1,-2,-4,-3] => 6
[-1,2,4,3] => 0
[-1,2,4,-3] => 2
[-1,2,-4,3] => 3
[-1,2,-4,-3] => 5
[-1,-2,4,3] => 1
[-1,-2,4,-3] => 3
[-1,-2,-4,3] => 4
[-1,-2,-4,-3] => 6
[1,3,2,4] => 0
[1,3,2,-4] => 3
[1,3,-2,4] => 1
[1,3,-2,-4] => 4
[1,-3,2,4] => 2
[1,-3,2,-4] => 5
[1,-3,-2,4] => 3
[1,-3,-2,-4] => 6
[-1,3,2,4] => 0
[-1,3,2,-4] => 3
[-1,3,-2,4] => 1
[-1,3,-2,-4] => 4
[-1,-3,2,4] => 2
[-1,-3,2,-4] => 5
[-1,-3,-2,4] => 3
[-1,-3,-2,-4] => 6
[1,3,4,2] => 0
[1,3,4,-2] => 1
[1,3,-4,2] => 3
[1,3,-4,-2] => 4
[1,-3,4,2] => 2
[1,-3,4,-2] => 3
[1,-3,-4,2] => 5
[1,-3,-4,-2] => 6
[-1,3,4,2] => 0
[-1,3,4,-2] => 1
[-1,3,-4,2] => 3
[-1,3,-4,-2] => 4
[-1,-3,4,2] => 2
[-1,-3,4,-2] => 3
[-1,-3,-4,2] => 5
[-1,-3,-4,-2] => 6
[1,4,2,3] => 0
[1,4,2,-3] => 2
[1,4,-2,3] => 1
[1,4,-2,-3] => 3
[1,-4,2,3] => 3
[1,-4,2,-3] => 5
[1,-4,-2,3] => 4
[1,-4,-2,-3] => 6
[-1,4,2,3] => 0
[-1,4,2,-3] => 2
[-1,4,-2,3] => 1
[-1,4,-2,-3] => 3
[-1,-4,2,3] => 3
[-1,-4,2,-3] => 5
[-1,-4,-2,3] => 4
[-1,-4,-2,-3] => 6
[1,4,3,2] => 0
[1,4,3,-2] => 1
[1,4,-3,2] => 2
[1,4,-3,-2] => 3
[1,-4,3,2] => 3
[1,-4,3,-2] => 4
[1,-4,-3,2] => 5
[1,-4,-3,-2] => 6
[-1,4,3,2] => 0
[-1,4,3,-2] => 1
[-1,4,-3,2] => 2
[-1,4,-3,-2] => 3
[-1,-4,3,2] => 3
[-1,-4,3,-2] => 4
[-1,-4,-3,2] => 5
[-1,-4,-3,-2] => 6
[2,1,3,4] => 0
[2,1,3,-4] => 3
[2,1,-3,4] => 2
[2,1,-3,-4] => 5
[2,-1,3,4] => 0
[2,-1,3,-4] => 3
[2,-1,-3,4] => 2
[2,-1,-3,-4] => 5
[-2,1,3,4] => 1
[-2,1,3,-4] => 4
[-2,1,-3,4] => 3
[-2,1,-3,-4] => 6
[-2,-1,3,4] => 1
[-2,-1,3,-4] => 4
[-2,-1,-3,4] => 3
[-2,-1,-3,-4] => 6
[2,1,4,3] => 0
[2,1,4,-3] => 2
[2,1,-4,3] => 3
[2,1,-4,-3] => 5
[2,-1,4,3] => 0
[2,-1,4,-3] => 2
[2,-1,-4,3] => 3
[2,-1,-4,-3] => 5
[-2,1,4,3] => 1
[-2,1,4,-3] => 3
[-2,1,-4,3] => 4
[-2,1,-4,-3] => 6
[-2,-1,4,3] => 1
[-2,-1,4,-3] => 3
[-2,-1,-4,3] => 4
[-2,-1,-4,-3] => 6
[2,3,1,4] => 0
[2,3,1,-4] => 3
[2,3,-1,4] => 0
[2,3,-1,-4] => 3
[2,-3,1,4] => 2
[2,-3,1,-4] => 5
[2,-3,-1,4] => 2
[2,-3,-1,-4] => 5
[-2,3,1,4] => 1
[-2,3,1,-4] => 4
[-2,3,-1,4] => 1
[-2,3,-1,-4] => 4
[-2,-3,1,4] => 3
[-2,-3,1,-4] => 6
[-2,-3,-1,4] => 3
[-2,-3,-1,-4] => 6
[2,3,4,1] => 0
[2,3,4,-1] => 0
[2,3,-4,1] => 3
[2,3,-4,-1] => 3
[2,-3,4,1] => 2
[2,-3,4,-1] => 2
[2,-3,-4,1] => 5
[2,-3,-4,-1] => 5
[-2,3,4,1] => 1
[-2,3,4,-1] => 1
[-2,3,-4,1] => 4
[-2,3,-4,-1] => 4
[-2,-3,4,1] => 3
[-2,-3,4,-1] => 3
[-2,-3,-4,1] => 6
[-2,-3,-4,-1] => 6
[2,4,1,3] => 0
[2,4,1,-3] => 2
[2,4,-1,3] => 0
[2,4,-1,-3] => 2
[2,-4,1,3] => 3
[2,-4,1,-3] => 5
[2,-4,-1,3] => 3
[2,-4,-1,-3] => 5
[-2,4,1,3] => 1
[-2,4,1,-3] => 3
[-2,4,-1,3] => 1
[-2,4,-1,-3] => 3
[-2,-4,1,3] => 4
[-2,-4,1,-3] => 6
[-2,-4,-1,3] => 4
[-2,-4,-1,-3] => 6
[2,4,3,1] => 0
[2,4,3,-1] => 0
[2,4,-3,1] => 2
[2,4,-3,-1] => 2
[2,-4,3,1] => 3
[2,-4,3,-1] => 3
[2,-4,-3,1] => 5
[2,-4,-3,-1] => 5
[-2,4,3,1] => 1
[-2,4,3,-1] => 1
[-2,4,-3,1] => 3
[-2,4,-3,-1] => 3
[-2,-4,3,1] => 4
[-2,-4,3,-1] => 4
[-2,-4,-3,1] => 6
[-2,-4,-3,-1] => 6
[3,1,2,4] => 0
[3,1,2,-4] => 3
[3,1,-2,4] => 1
[3,1,-2,-4] => 4
[3,-1,2,4] => 0
[3,-1,2,-4] => 3
[3,-1,-2,4] => 1
[3,-1,-2,-4] => 4
[-3,1,2,4] => 2
[-3,1,2,-4] => 5
[-3,1,-2,4] => 3
[-3,1,-2,-4] => 6
[-3,-1,2,4] => 2
[-3,-1,2,-4] => 5
[-3,-1,-2,4] => 3
[-3,-1,-2,-4] => 6
[3,1,4,2] => 0
[3,1,4,-2] => 1
[3,1,-4,2] => 3
[3,1,-4,-2] => 4
[3,-1,4,2] => 0
[3,-1,4,-2] => 1
[3,-1,-4,2] => 3
[3,-1,-4,-2] => 4
[-3,1,4,2] => 2
[-3,1,4,-2] => 3
[-3,1,-4,2] => 5
[-3,1,-4,-2] => 6
[-3,-1,4,2] => 2
[-3,-1,4,-2] => 3
[-3,-1,-4,2] => 5
[-3,-1,-4,-2] => 6
[3,2,1,4] => 0
[3,2,1,-4] => 3
[3,2,-1,4] => 0
[3,2,-1,-4] => 3
[3,-2,1,4] => 1
[3,-2,1,-4] => 4
[3,-2,-1,4] => 1
[3,-2,-1,-4] => 4
[-3,2,1,4] => 2
[-3,2,1,-4] => 5
[-3,2,-1,4] => 2
[-3,2,-1,-4] => 5
[-3,-2,1,4] => 3
[-3,-2,1,-4] => 6
[-3,-2,-1,4] => 3
[-3,-2,-1,-4] => 6
[3,2,4,1] => 0
[3,2,4,-1] => 0
[3,2,-4,1] => 3
[3,2,-4,-1] => 3
[3,-2,4,1] => 1
[3,-2,4,-1] => 1
[3,-2,-4,1] => 4
[3,-2,-4,-1] => 4
[-3,2,4,1] => 2
[-3,2,4,-1] => 2
[-3,2,-4,1] => 5
[-3,2,-4,-1] => 5
[-3,-2,4,1] => 3
[-3,-2,4,-1] => 3
[-3,-2,-4,1] => 6
[-3,-2,-4,-1] => 6
[3,4,1,2] => 0
[3,4,1,-2] => 1
[3,4,-1,2] => 0
[3,4,-1,-2] => 1
[3,-4,1,2] => 3
[3,-4,1,-2] => 4
[3,-4,-1,2] => 3
[3,-4,-1,-2] => 4
[-3,4,1,2] => 2
[-3,4,1,-2] => 3
[-3,4,-1,2] => 2
[-3,4,-1,-2] => 3
[-3,-4,1,2] => 5
[-3,-4,1,-2] => 6
[-3,-4,-1,2] => 5
[-3,-4,-1,-2] => 6
[3,4,2,1] => 0
[3,4,2,-1] => 0
[3,4,-2,1] => 1
[3,4,-2,-1] => 1
[3,-4,2,1] => 3
[3,-4,2,-1] => 3
[3,-4,-2,1] => 4
[3,-4,-2,-1] => 4
[-3,4,2,1] => 2
[-3,4,2,-1] => 2
[-3,4,-2,1] => 3
[-3,4,-2,-1] => 3
[-3,-4,2,1] => 5
[-3,-4,2,-1] => 5
[-3,-4,-2,1] => 6
[-3,-4,-2,-1] => 6
[4,1,2,3] => 0
[4,1,2,-3] => 2
[4,1,-2,3] => 1
[4,1,-2,-3] => 3
[4,-1,2,3] => 0
[4,-1,2,-3] => 2
[4,-1,-2,3] => 1
[4,-1,-2,-3] => 3
[-4,1,2,3] => 3
[-4,1,2,-3] => 5
[-4,1,-2,3] => 4
[-4,1,-2,-3] => 6
[-4,-1,2,3] => 3
[-4,-1,2,-3] => 5
[-4,-1,-2,3] => 4
[-4,-1,-2,-3] => 6
[4,1,3,2] => 0
[4,1,3,-2] => 1
[4,1,-3,2] => 2
[4,1,-3,-2] => 3
[4,-1,3,2] => 0
[4,-1,3,-2] => 1
[4,-1,-3,2] => 2
[4,-1,-3,-2] => 3
[-4,1,3,2] => 3
[-4,1,3,-2] => 4
[-4,1,-3,2] => 5
[-4,1,-3,-2] => 6
[-4,-1,3,2] => 3
[-4,-1,3,-2] => 4
[-4,-1,-3,2] => 5
[-4,-1,-3,-2] => 6
[4,2,1,3] => 0
[4,2,1,-3] => 2
[4,2,-1,3] => 0
[4,2,-1,-3] => 2
[4,-2,1,3] => 1
[4,-2,1,-3] => 3
[4,-2,-1,3] => 1
[4,-2,-1,-3] => 3
[-4,2,1,3] => 3
[-4,2,1,-3] => 5
[-4,2,-1,3] => 3
[-4,2,-1,-3] => 5
[-4,-2,1,3] => 4
[-4,-2,1,-3] => 6
[-4,-2,-1,3] => 4
[-4,-2,-1,-3] => 6
[4,2,3,1] => 0
[4,2,3,-1] => 0
[4,2,-3,1] => 2
[4,2,-3,-1] => 2
[4,-2,3,1] => 1
[4,-2,3,-1] => 1
[4,-2,-3,1] => 3
[4,-2,-3,-1] => 3
[-4,2,3,1] => 3
[-4,2,3,-1] => 3
[-4,2,-3,1] => 5
[-4,2,-3,-1] => 5
[-4,-2,3,1] => 4
[-4,-2,3,-1] => 4
[-4,-2,-3,1] => 6
[-4,-2,-3,-1] => 6
[4,3,1,2] => 0
[4,3,1,-2] => 1
[4,3,-1,2] => 0
[4,3,-1,-2] => 1
[4,-3,1,2] => 2
[4,-3,1,-2] => 3
[4,-3,-1,2] => 2
[4,-3,-1,-2] => 3
[-4,3,1,2] => 3
[-4,3,1,-2] => 4
[-4,3,-1,2] => 3
[-4,3,-1,-2] => 4
[-4,-3,1,2] => 5
[-4,-3,1,-2] => 6
[-4,-3,-1,2] => 5
[-4,-3,-1,-2] => 6
[4,3,2,1] => 0
[4,3,2,-1] => 0
[4,3,-2,1] => 1
[4,3,-2,-1] => 1
[4,-3,2,1] => 2
[4,-3,2,-1] => 2
[4,-3,-2,1] => 3
[4,-3,-2,-1] => 3
[-4,3,2,1] => 3
[-4,3,2,-1] => 3
[-4,3,-2,1] => 4
[-4,3,-2,-1] => 4
[-4,-3,2,1] => 5
[-4,-3,2,-1] => 5
[-4,-3,-2,1] => 6
[-4,-3,-2,-1] => 6
[1,2,3,4,5] => 0
[1,2,3,4,-5] => 4
[-1,2,3,4,5] => 0
[1,2,3,5,4] => 0
[1,2,3,5,-4] => 3
[-1,2,3,5,4] => 0
[1,2,4,3,5] => 0
[1,2,4,3,-5] => 4
[-1,2,4,3,5] => 0
[1,2,4,5,3] => 0
[1,2,4,5,-3] => 2
[-1,2,4,5,3] => 0
[1,2,5,3,4] => 0
[1,2,5,3,-4] => 3
[-1,2,5,3,4] => 0
[1,2,5,4,3] => 0
[1,2,5,4,-3] => 2
[-1,2,5,4,3] => 0
[1,3,2,4,5] => 0
[1,3,2,4,-5] => 4
[-1,3,2,4,5] => 0
[1,3,2,5,4] => 0
[1,3,2,5,-4] => 3
[-1,3,2,5,4] => 0
[1,3,4,2,5] => 0
[1,3,4,2,-5] => 4
[-1,3,4,2,5] => 0
[1,3,4,5,2] => 0
[1,3,4,5,-2] => 1
[-1,3,4,5,2] => 0
[1,3,5,2,4] => 0
[1,3,5,2,-4] => 3
[-1,3,5,2,4] => 0
[1,3,5,4,2] => 0
[1,3,5,4,-2] => 1
[-1,3,5,4,2] => 0
[1,4,2,3,5] => 0
[1,4,2,3,-5] => 4
[-1,4,2,3,5] => 0
[1,4,2,5,3] => 0
[1,4,2,5,-3] => 2
[-1,4,2,5,3] => 0
[1,4,3,2,5] => 0
[1,4,3,2,-5] => 4
[-1,4,3,2,5] => 0
[1,4,3,5,2] => 0
[1,4,3,5,-2] => 1
[-1,4,3,5,2] => 0
[1,4,5,2,3] => 0
[1,4,5,2,-3] => 2
[-1,4,5,2,3] => 0
[1,4,5,3,2] => 0
[1,4,5,3,-2] => 1
[-1,4,5,3,2] => 0
[1,5,2,3,4] => 0
[1,5,2,3,-4] => 3
[-1,5,2,3,4] => 0
[1,5,2,4,3] => 0
[1,5,2,4,-3] => 2
[-1,5,2,4,3] => 0
[1,5,3,2,4] => 0
[1,5,3,2,-4] => 3
[-1,5,3,2,4] => 0
[1,5,3,4,2] => 0
[1,5,3,4,-2] => 1
[-1,5,3,4,2] => 0
[1,5,4,2,3] => 0
[1,5,4,2,-3] => 2
[-1,5,4,2,3] => 0
[1,5,4,3,2] => 0
[1,5,4,3,-2] => 1
[-1,5,4,3,2] => 0
[2,1,3,4,5] => 0
[2,1,3,4,-5] => 4
[2,-1,3,4,5] => 0
[2,1,3,5,4] => 0
[2,1,3,5,-4] => 3
[2,-1,3,5,4] => 0
[2,1,4,3,5] => 0
[2,1,4,3,-5] => 4
[2,-1,4,3,5] => 0
[2,1,4,5,3] => 0
[2,1,4,5,-3] => 2
[2,-1,4,5,3] => 0
[2,1,5,3,4] => 0
[2,1,5,3,-4] => 3
[2,-1,5,3,4] => 0
[2,1,5,4,3] => 0
[2,1,5,4,-3] => 2
[2,-1,5,4,3] => 0
[2,3,1,4,5] => 0
[2,3,1,4,-5] => 4
[2,3,-1,4,5] => 0
[2,3,1,5,4] => 0
[2,3,1,5,-4] => 3
[2,3,-1,5,4] => 0
[2,3,4,1,5] => 0
[2,3,4,1,-5] => 4
[2,3,4,-1,5] => 0
[2,3,4,5,1] => 0
[2,3,4,5,-1] => 0
[2,3,5,1,4] => 0
[2,3,5,1,-4] => 3
[2,3,5,-1,4] => 0
[2,3,5,4,1] => 0
[2,3,5,4,-1] => 0
[2,4,1,3,5] => 0
[2,4,1,3,-5] => 4
[2,4,-1,3,5] => 0
[2,4,1,5,3] => 0
[2,4,1,5,-3] => 2
[2,4,-1,5,3] => 0
[2,4,3,1,5] => 0
[2,4,3,1,-5] => 4
[2,4,3,-1,5] => 0
[2,4,3,5,1] => 0
[2,4,3,5,-1] => 0
[2,4,5,1,3] => 0
[2,4,5,1,-3] => 2
[2,4,5,-1,3] => 0
[2,4,5,3,1] => 0
[2,4,5,3,-1] => 0
[2,5,1,3,4] => 0
[2,5,1,3,-4] => 3
[2,5,-1,3,4] => 0
[2,5,1,4,3] => 0
[2,5,1,4,-3] => 2
[2,5,-1,4,3] => 0
[2,5,3,1,4] => 0
[2,5,3,1,-4] => 3
[2,5,3,-1,4] => 0
[2,5,3,4,1] => 0
[2,5,3,4,-1] => 0
[2,5,4,1,3] => 0
[2,5,4,1,-3] => 2
[2,5,4,-1,3] => 0
[2,5,4,3,1] => 0
[2,5,4,3,-1] => 0
[3,1,2,4,5] => 0
[3,1,2,4,-5] => 4
[3,-1,2,4,5] => 0
[3,1,2,5,4] => 0
[3,1,2,5,-4] => 3
[3,-1,2,5,4] => 0
[3,1,4,2,5] => 0
[3,1,4,2,-5] => 4
[3,-1,4,2,5] => 0
[3,1,4,5,2] => 0
[3,1,4,5,-2] => 1
[3,-1,4,5,2] => 0
[3,1,5,2,4] => 0
[3,1,5,2,-4] => 3
[3,-1,5,2,4] => 0
[3,1,5,4,2] => 0
[3,1,5,4,-2] => 1
[3,-1,5,4,2] => 0
[3,2,1,4,5] => 0
[3,2,1,4,-5] => 4
[3,2,-1,4,5] => 0
[3,2,1,5,4] => 0
[3,2,1,5,-4] => 3
[3,2,-1,5,4] => 0
[3,2,4,1,5] => 0
[3,2,4,1,-5] => 4
[3,2,4,-1,5] => 0
[3,2,4,5,1] => 0
[3,2,4,5,-1] => 0
[3,2,5,1,4] => 0
[3,2,5,1,-4] => 3
[3,2,5,-1,4] => 0
[3,2,5,4,1] => 0
[3,2,5,4,-1] => 0
[3,4,1,2,5] => 0
[3,4,1,2,-5] => 4
[3,4,-1,2,5] => 0
[3,4,1,5,2] => 0
[3,4,1,5,-2] => 1
[3,4,-1,5,2] => 0
[3,4,2,1,5] => 0
[3,4,2,1,-5] => 4
[3,4,2,-1,5] => 0
[3,4,2,5,1] => 0
[3,4,2,5,-1] => 0
[3,4,5,1,2] => 0
[3,4,5,1,-2] => 1
[3,4,5,-1,2] => 0
[3,4,5,2,1] => 0
[3,4,5,2,-1] => 0
[3,5,1,2,4] => 0
[3,5,1,2,-4] => 3
[3,5,-1,2,4] => 0
[3,5,1,4,2] => 0
[3,5,1,4,-2] => 1
[3,5,-1,4,2] => 0
[3,5,2,1,4] => 0
[3,5,2,1,-4] => 3
[3,5,2,-1,4] => 0
[3,5,2,4,1] => 0
[3,5,2,4,-1] => 0
[3,5,4,1,2] => 0
[3,5,4,1,-2] => 1
[3,5,4,-1,2] => 0
[3,5,4,2,1] => 0
[3,5,4,2,-1] => 0
[4,1,2,3,5] => 0
[4,1,2,3,-5] => 4
[4,-1,2,3,5] => 0
[4,1,2,5,3] => 0
[4,1,2,5,-3] => 2
[4,-1,2,5,3] => 0
[4,1,3,2,5] => 0
[4,1,3,2,-5] => 4
[4,-1,3,2,5] => 0
[4,1,3,5,2] => 0
[4,1,3,5,-2] => 1
[4,-1,3,5,2] => 0
[4,1,5,2,3] => 0
[4,1,5,2,-3] => 2
[4,-1,5,2,3] => 0
[4,1,5,3,2] => 0
[4,1,5,3,-2] => 1
[4,-1,5,3,2] => 0
[4,2,1,3,5] => 0
[4,2,1,3,-5] => 4
[4,2,-1,3,5] => 0
[4,2,1,5,3] => 0
[4,2,1,5,-3] => 2
[4,2,-1,5,3] => 0
[4,2,3,1,5] => 0
[4,2,3,1,-5] => 4
[4,2,3,-1,5] => 0
[4,2,3,5,1] => 0
[4,2,3,5,-1] => 0
[4,2,5,1,3] => 0
[4,2,5,1,-3] => 2
[4,2,5,-1,3] => 0
[4,2,5,3,1] => 0
[4,2,5,3,-1] => 0
[4,3,1,2,5] => 0
[4,3,1,2,-5] => 4
[4,3,-1,2,5] => 0
[4,3,1,5,2] => 0
[4,3,1,5,-2] => 1
[4,3,-1,5,2] => 0
[4,3,2,1,5] => 0
[4,3,2,1,-5] => 4
[4,3,2,-1,5] => 0
[4,3,2,5,1] => 0
[4,3,2,5,-1] => 0
[4,3,5,1,2] => 0
[4,3,5,1,-2] => 1
[4,3,5,-1,2] => 0
[4,3,5,2,1] => 0
[4,3,5,2,-1] => 0
[4,5,1,2,3] => 0
[4,5,1,2,-3] => 2
[4,5,-1,2,3] => 0
[4,5,1,3,2] => 0
[4,5,1,3,-2] => 1
[4,5,-1,3,2] => 0
[4,5,2,1,3] => 0
[4,5,2,1,-3] => 2
[4,5,2,-1,3] => 0
[4,5,2,3,1] => 0
[4,5,2,3,-1] => 0
[4,5,3,1,2] => 0
[4,5,3,1,-2] => 1
[4,5,3,-1,2] => 0
[4,5,3,2,1] => 0
[4,5,3,2,-1] => 0
[5,1,2,3,4] => 0
[5,1,2,3,-4] => 3
[5,-1,2,3,4] => 0
[5,1,2,4,3] => 0
[5,1,2,4,-3] => 2
[5,-1,2,4,3] => 0
[5,1,3,2,4] => 0
[5,1,3,2,-4] => 3
[5,-1,3,2,4] => 0
[5,1,3,4,2] => 0
[5,1,3,4,-2] => 1
[5,-1,3,4,2] => 0
[5,1,4,2,3] => 0
[5,1,4,2,-3] => 2
[5,-1,4,2,3] => 0
[5,1,4,3,2] => 0
[5,1,4,3,-2] => 1
[5,-1,4,3,2] => 0
[5,2,1,3,4] => 0
[5,2,1,3,-4] => 3
[5,2,-1,3,4] => 0
[5,2,1,4,3] => 0
[5,2,1,4,-3] => 2
[5,2,-1,4,3] => 0
[5,2,3,1,4] => 0
[5,2,3,1,-4] => 3
[5,2,3,-1,4] => 0
[5,2,3,4,1] => 0
[5,2,3,4,-1] => 0
[5,2,4,1,3] => 0
[5,2,4,1,-3] => 2
[5,2,4,-1,3] => 0
[5,2,4,3,1] => 0
[5,2,4,3,-1] => 0
[5,3,1,2,4] => 0
[5,3,1,2,-4] => 3
[5,3,-1,2,4] => 0
[5,3,1,4,2] => 0
[5,3,1,4,-2] => 1
[5,3,-1,4,2] => 0
[5,3,2,1,4] => 0
[5,3,2,1,-4] => 3
[5,3,2,-1,4] => 0
[5,3,2,4,1] => 0
[5,3,2,4,-1] => 0
[5,3,4,1,2] => 0
[5,3,4,1,-2] => 1
[5,3,4,-1,2] => 0
[5,3,4,2,1] => 0
[5,3,4,2,-1] => 0
[5,4,1,2,3] => 0
[5,4,1,2,-3] => 2
[5,4,-1,2,3] => 0
[5,4,1,3,2] => 0
[5,4,1,3,-2] => 1
[5,4,-1,3,2] => 0
[5,4,2,1,3] => 0
[5,4,2,1,-3] => 2
[5,4,2,-1,3] => 0
[5,4,2,3,1] => 0
[5,4,2,3,-1] => 0
[5,4,3,1,2] => 0
[5,4,3,1,-2] => 1
[5,4,3,-1,2] => 0
[5,4,3,2,1] => 0
[5,4,3,2,-1] => 0
[1,2,3,4,5,6] => 0
[1,2,3,4,6,5] => 0
[1,2,3,5,4,6] => 0
[1,2,3,5,6,4] => 0
[1,2,3,6,4,5] => 0
[1,2,3,6,5,4] => 0
[1,2,4,3,5,6] => 0
[1,2,4,3,6,5] => 0
[1,2,4,5,3,6] => 0
[1,2,4,5,6,3] => 0
[1,2,4,6,3,5] => 0
[1,2,4,6,5,3] => 0
[1,2,5,3,4,6] => 0
[1,2,5,3,6,4] => 0
[1,2,5,4,3,6] => 0
[1,2,5,4,6,3] => 0
[1,2,5,6,3,4] => 0
[1,2,5,6,4,3] => 0
[1,2,6,3,4,5] => 0
[1,2,6,4,5,3] => 0
[1,2,6,5,4,3] => 0
[1,3,2,4,5,6] => 0
[1,3,2,4,6,5] => 0
[1,3,2,5,4,6] => 0
[1,3,2,5,6,4] => 0
[1,3,2,6,4,5] => 0
[1,3,2,6,5,4] => 0
[1,3,4,2,5,6] => 0
[1,3,4,2,6,5] => 0
[1,3,4,5,2,6] => 0
[1,3,4,5,6,2] => 0
[1,3,4,6,2,5] => 0
[1,3,4,6,5,2] => 0
[1,3,5,2,4,6] => 0
[1,3,5,2,6,4] => 0
[1,3,5,4,2,6] => 0
[1,3,5,4,6,2] => 0
[1,3,5,6,2,4] => 0
[1,3,5,6,4,2] => 0
[1,3,6,2,4,5] => 0
[1,3,6,4,5,2] => 0
[1,3,6,5,4,2] => 0
[1,4,2,3,5,6] => 0
[1,4,2,3,6,5] => 0
[1,4,2,5,3,6] => 0
[1,4,2,5,6,3] => 0
[1,4,2,6,3,5] => 0
[1,4,3,2,5,6] => 0
[1,4,3,2,6,5] => 0
[1,4,3,5,2,6] => 0
[1,4,3,5,6,2] => 0
[1,4,3,6,5,2] => 0
[1,4,5,2,3,6] => 0
[1,4,5,2,6,3] => 0
[1,4,5,3,2,6] => 0
[1,4,5,3,6,2] => 0
[1,4,5,6,2,3] => 0
[1,4,5,6,3,2] => 0
[1,4,6,2,3,5] => 0
[1,4,6,5,3,2] => 0
[1,5,2,3,4,6] => 0
[1,5,2,3,6,4] => 0
[1,5,2,6,3,4] => 0
[1,5,3,4,2,6] => 0
[1,5,3,4,6,2] => 0
[1,5,4,3,2,6] => 0
[1,5,4,3,6,2] => 0
[1,5,4,6,3,2] => 0
[1,5,6,2,3,4] => 0
[1,5,6,4,3,2] => 0
[1,6,2,3,4,5] => 0
[1,6,3,4,5,2] => 0
[1,6,3,5,4,2] => 0
[1,6,4,3,5,2] => 0
[1,6,4,5,3,2] => 0
[1,6,5,4,3,2] => 0
[2,1,3,4,5,6] => 0
[2,1,3,4,6,5] => 0
[2,1,3,5,4,6] => 0
[2,1,3,5,6,4] => 0
[2,1,3,6,4,5] => 0
[2,1,3,6,5,4] => 0
[2,1,4,3,5,6] => 0
[2,1,4,3,6,5] => 0
[2,1,4,5,3,6] => 0
[2,1,4,5,6,3] => 0
[2,1,4,6,3,5] => 0
[2,1,4,6,5,3] => 0
[2,1,5,3,4,6] => 0
[2,1,5,3,6,4] => 0
[2,1,5,4,3,6] => 0
[2,1,5,4,6,3] => 0
[2,1,5,6,3,4] => 0
[2,1,5,6,4,3] => 0
[2,1,6,3,4,5] => 0
[2,1,6,4,5,3] => 0
[2,1,6,5,4,3] => 0
[2,3,1,4,5,6] => 0
[2,3,1,4,6,5] => 0
[2,3,1,5,4,6] => 0
[2,3,1,5,6,4] => 0
[2,3,1,6,4,5] => 0
[2,3,1,6,5,4] => 0
[2,3,4,1,5,6] => 0
[2,3,4,1,6,5] => 0
[2,3,4,5,1,6] => 0
[2,3,4,5,6,1] => 0
[2,3,4,6,1,5] => 0
[2,3,4,6,5,1] => 0
[2,3,5,1,4,6] => 0
[2,3,5,1,6,4] => 0
[2,3,5,4,1,6] => 0
[2,3,5,4,6,1] => 0
[2,3,5,6,1,4] => 0
[2,3,5,6,4,1] => 0
[2,3,6,1,4,5] => 0
[2,3,6,4,5,1] => 0
[2,3,6,5,4,1] => 0
[2,4,1,3,5,6] => 0
[2,4,1,3,6,5] => 0
[2,4,1,5,3,6] => 0
[2,4,1,5,6,3] => 0
[2,4,1,6,3,5] => 0
[2,4,3,1,5,6] => 0
[2,4,3,1,6,5] => 0
[2,4,3,5,1,6] => 0
[2,4,3,5,6,1] => 0
[2,4,3,6,5,1] => 0
[2,4,5,1,3,6] => 0
[2,4,5,1,6,3] => 0
[2,4,5,3,1,6] => 0
[2,4,5,3,6,1] => 0
[2,4,5,6,1,3] => 0
[2,4,5,6,3,1] => 0
[2,4,6,1,3,5] => 0
[2,4,6,5,3,1] => 0
[2,5,1,3,4,6] => 0
[2,5,1,3,6,4] => 0
[2,5,1,6,3,4] => 0
[2,5,3,4,1,6] => 0
[2,5,3,4,6,1] => 0
[2,5,4,3,1,6] => 0
[2,5,4,3,6,1] => 0
[2,5,4,6,3,1] => 0
[2,5,6,1,3,4] => 0
[2,5,6,4,3,1] => 0
[2,6,1,3,4,5] => 0
[2,6,3,4,5,1] => 0
[2,6,3,5,4,1] => 0
[2,6,4,3,5,1] => 0
[2,6,4,5,3,1] => 0
[2,6,5,4,3,1] => 0
[3,1,2,4,5,6] => 0
[3,1,2,4,6,5] => 0
[3,1,2,5,4,6] => 0
[3,1,2,5,6,4] => 0
[3,1,2,6,4,5] => 0
[3,1,4,2,5,6] => 0
[3,1,4,2,6,5] => 0
[3,1,4,5,2,6] => 0
[3,1,4,5,6,2] => 0
[3,1,4,6,2,5] => 0
[3,1,5,2,4,6] => 0
[3,1,5,2,6,4] => 0
[3,1,5,6,2,4] => 0
[3,1,6,2,4,5] => 0
[3,2,1,4,5,6] => 0
[3,2,1,4,6,5] => 0
[3,2,1,5,4,6] => 0
[3,2,1,5,6,4] => 0
[3,2,1,6,5,4] => 0
[3,2,4,1,5,6] => 0
[3,2,4,1,6,5] => 0
[3,2,4,5,1,6] => 0
[3,2,4,5,6,1] => 0
[3,2,4,6,5,1] => 0
[3,2,5,1,4,6] => 0
[3,2,5,4,1,6] => 0
[3,2,5,4,6,1] => 0
[3,2,5,6,4,1] => 0
[3,2,6,1,4,5] => 0
[3,2,6,4,5,1] => 0
[3,2,6,5,4,1] => 0
[3,4,1,2,5,6] => 0
[3,4,1,2,6,5] => 0
[3,4,1,5,2,6] => 0
[3,4,1,5,6,2] => 0
[3,4,1,6,2,5] => 0
[3,4,2,1,5,6] => 0
[3,4,2,1,6,5] => 0
[3,4,2,5,1,6] => 0
[3,4,2,5,6,1] => 0
[3,4,2,6,5,1] => 0
[3,4,5,1,2,6] => 0
[3,4,5,1,6,2] => 0
[3,4,5,2,1,6] => 0
[3,4,5,2,6,1] => 0
[3,4,5,6,1,2] => 0
[3,4,5,6,2,1] => 0
[3,4,6,1,2,5] => 0
[3,4,6,5,2,1] => 0
[3,5,1,2,4,6] => 0
[3,5,1,2,6,4] => 0
[3,5,1,6,2,4] => 0
[3,5,4,2,1,6] => 0
[3,5,4,2,6,1] => 0
[3,5,4,6,2,1] => 0
[3,5,6,1,2,4] => 0
[3,5,6,4,2,1] => 0
[3,6,1,2,4,5] => 0
[3,6,1,5,4,2] => 0
[3,6,2,5,1,4] => 0
[3,6,5,4,2,1] => 0
[4,1,2,3,5,6] => 0
[4,1,2,3,6,5] => 0
[4,1,2,5,3,6] => 0
[4,1,2,5,6,3] => 0
[4,1,2,6,3,5] => 0
[4,1,5,2,3,6] => 0
[4,1,5,2,6,3] => 0
[4,1,5,6,2,3] => 0
[4,1,6,2,3,5] => 0
[4,2,1,3,5,6] => 0
[4,2,3,1,5,6] => 0
[4,2,3,1,6,5] => 0
[4,2,3,5,1,6] => 0
[4,2,3,5,6,1] => 0
[4,2,3,6,5,1] => 0
[4,2,5,1,3,6] => 0
[4,2,6,1,3,5] => 0
[4,3,1,2,5,6] => 0
[4,3,2,1,5,6] => 0
[4,3,2,1,6,5] => 0
[4,3,2,5,1,6] => 0
[4,3,2,5,6,1] => 0
[4,3,2,6,1,5] => 0
[4,3,2,6,5,1] => 0
[4,3,5,1,2,6] => 0
[4,3,5,2,1,6] => 0
[4,3,5,2,6,1] => 0
[4,3,5,6,1,2] => 0
[4,3,5,6,2,1] => 0
[4,3,6,1,2,5] => 0
[4,3,6,5,2,1] => 0
[4,5,1,2,3,6] => 0
[4,5,1,2,6,3] => 0
[4,5,1,6,2,3] => 0
[4,5,2,1,3,6] => 0
[4,5,2,3,1,6] => 0
[4,5,2,3,6,1] => 0
[4,5,3,1,2,6] => 0
[4,5,3,2,1,6] => 0
[4,5,3,2,6,1] => 0
[4,5,3,6,1,2] => 0
[4,5,3,6,2,1] => 0
[4,5,6,1,2,3] => 0
[4,5,6,2,1,3] => 0
[4,5,6,2,3,1] => 0
[4,5,6,3,1,2] => 0
[4,5,6,3,2,1] => 0
[4,6,1,2,3,5] => 0
[4,6,2,5,1,3] => 0
[4,6,3,5,1,2] => 0
[4,6,5,1,3,2] => 0
[4,6,5,3,2,1] => 0
[5,1,2,3,4,6] => 0
[5,1,2,3,6,4] => 0
[5,1,2,6,3,4] => 0
[5,1,6,2,3,4] => 0
[5,2,1,3,4,6] => 0
[5,2,3,1,4,6] => 0
[5,2,3,4,1,6] => 0
[5,2,3,4,6,1] => 0
[5,2,4,1,3,6] => 0
[5,2,4,3,1,6] => 0
[5,2,4,3,6,1] => 0
[5,2,6,1,3,4] => 0
[5,3,1,2,4,6] => 0
[5,3,2,1,4,6] => 0
[5,3,2,4,1,6] => 0
[5,3,2,4,6,1] => 0
[5,3,2,6,1,4] => 0
[5,3,4,1,2,6] => 0
[5,3,4,2,1,6] => 0
[5,3,4,2,6,1] => 0
[5,3,4,6,1,2] => 0
[5,3,4,6,2,1] => 0
[5,3,6,1,2,4] => 0
[5,4,1,2,3,6] => 0
[5,4,2,1,3,6] => 0
[5,4,2,3,1,6] => 0
[5,4,2,3,6,1] => 0
[5,4,2,6,1,3] => 0
[5,4,3,1,2,6] => 0
[5,4,3,2,1,6] => 0
[5,4,3,2,6,1] => 0
[5,4,3,6,1,2] => 0
[5,4,3,6,2,1] => 0
[5,4,6,1,2,3] => 0
[5,4,6,2,1,3] => 0
[5,4,6,2,3,1] => 0
[5,4,6,3,1,2] => 0
[5,4,6,3,2,1] => 0
[5,6,1,2,3,4] => 0
[5,6,2,1,3,4] => 0
[5,6,2,3,1,4] => 0
[5,6,2,3,4,1] => 0
[5,6,2,4,1,3] => 0
[5,6,3,1,2,4] => 0
[5,6,3,2,1,4] => 0
[5,6,3,2,4,1] => 0
[5,6,3,4,1,2] => 0
[5,6,3,4,2,1] => 0
[5,6,4,1,2,3] => 0
[5,6,4,2,1,3] => 0
[5,6,4,2,3,1] => 0
[5,6,4,3,1,2] => 0
[5,6,4,3,2,1] => 0
[6,1,2,3,4,5] => 0
[6,2,1,3,4,5] => 0
[6,2,3,1,4,5] => 0
[6,2,3,4,1,5] => 0
[6,2,3,4,5,1] => 0
[6,2,3,5,4,1] => 0
[6,2,4,1,3,5] => 0
[6,2,4,3,5,1] => 0
[6,2,4,5,3,1] => 0
[6,2,5,1,3,4] => 0
[6,2,5,4,3,1] => 0
[6,3,1,2,4,5] => 0
[6,3,2,1,4,5] => 0
[6,3,2,4,1,5] => 0
[6,3,2,4,5,1] => 0
[6,3,2,5,1,4] => 0
[6,3,2,5,4,1] => 0
[6,3,4,1,2,5] => 0
[6,3,4,2,1,5] => 0
[6,3,4,2,5,1] => 0
[6,3,4,5,1,2] => 0
[6,3,4,5,2,1] => 0
[6,3,5,1,2,4] => 0
[6,3,5,4,2,1] => 0
[6,4,1,2,3,5] => 0
[6,4,2,1,3,5] => 0
[6,4,2,3,1,5] => 0
[6,4,2,3,5,1] => 0
[6,4,2,5,1,3] => 0
[6,4,3,1,2,5] => 0
[6,4,3,2,1,5] => 0
[6,4,3,2,5,1] => 0
[6,4,3,5,1,2] => 0
[6,4,3,5,2,1] => 0
[6,4,5,1,2,3] => 0
[6,4,5,2,1,3] => 0
[6,4,5,2,3,1] => 0
[6,4,5,3,1,2] => 0
[6,4,5,3,2,1] => 0
[6,5,1,2,3,4] => 0
[6,5,2,1,3,4] => 0
[6,5,2,3,1,4] => 0
[6,5,2,3,4,1] => 0
[6,5,2,4,1,3] => 0
[6,5,3,1,2,4] => 0
[6,5,3,2,1,4] => 0
[6,5,3,2,4,1] => 0
[6,5,3,4,1,2] => 0
[6,5,3,4,2,1] => 0
[6,5,4,1,2,3] => 0
[6,5,4,2,1,3] => 0
[6,5,4,2,3,1] => 0
[6,5,4,3,1,2] => 0
[6,5,4,3,2,1] => 0
[2,1,4,3,6,5,8,7] => 0
[3,4,1,2,6,5,8,7] => 0
[4,5,6,1,2,3,8,7] => 0
[3,5,1,6,2,4,8,7] => 0
[2,1,5,6,3,4,8,7] => 0
[5,6,7,8,1,2,3,4] => 0
[4,6,7,1,8,2,3,5] => 0
[3,6,1,7,8,2,4,5] => 0
[2,1,6,7,8,3,4,5] => 0
[2,1,5,7,3,8,4,6] => 0
[3,5,1,7,2,8,4,6] => 0
[4,5,7,1,2,8,3,6] => 0
[3,4,1,2,7,8,5,6] => 0
[2,1,4,3,7,8,5,6] => 0
[4,3,2,1,6,5,8,7] => 0
[5,3,2,6,1,4,8,7] => 0
[6,3,2,5,4,1,8,7] => 0
[7,3,2,5,4,8,1,6] => 0
[8,3,2,5,4,7,6,1] => 0
[8,4,5,2,3,7,6,1] => 0
[7,4,5,2,3,8,1,6] => 0
[6,4,5,2,3,1,8,7] => 0
[5,4,6,2,1,3,8,7] => 0
[2,1,6,5,4,3,8,7] => 0
[3,6,1,5,4,2,8,7] => 0
[4,6,5,1,3,2,8,7] => 0
[5,6,4,3,1,2,8,7] => 0
[6,5,4,3,2,1,8,7] => 0
[7,5,4,3,2,8,1,6] => 0
[8,5,4,3,2,7,6,1] => 0
[8,6,4,3,7,2,5,1] => 0
[7,6,4,3,8,2,1,5] => 0
[6,7,4,3,8,1,2,5] => 0
[5,7,4,3,1,8,2,6] => 0
[4,7,5,1,3,8,2,6] => 0
[3,7,1,5,4,8,2,6] => 0
[2,1,7,5,4,8,3,6] => 0
[2,1,8,5,4,7,6,3] => 0
[3,8,1,5,4,7,6,2] => 0
[4,8,5,1,3,7,6,2] => 0
[5,8,4,3,1,7,6,2] => 0
[6,8,4,3,7,1,5,2] => 0
[7,8,4,3,6,5,1,2] => 0
[8,7,4,3,6,5,2,1] => 0
[8,7,5,6,3,4,2,1] => 0
[7,8,5,6,3,4,1,2] => 0
[6,8,5,7,3,1,4,2] => 0
[5,8,6,7,1,3,4,2] => 0
[4,8,6,1,7,3,5,2] => 0
[3,8,1,6,7,4,5,2] => 0
[2,1,8,6,7,4,5,3] => 0
[2,1,7,6,8,4,3,5] => 0
[3,7,1,6,8,4,2,5] => 0
[4,7,6,1,8,3,2,5] => 0
[5,7,6,8,1,3,2,4] => 0
[6,7,5,8,3,1,2,4] => 0
[7,6,5,8,3,2,1,4] => 0
[8,6,5,7,3,2,4,1] => 0
[8,5,6,7,2,3,4,1] => 0
[7,5,6,8,2,3,1,4] => 0
[6,5,7,8,2,1,3,4] => 0
[5,4,7,2,1,8,3,6] => 0
[6,4,7,2,8,1,3,5] => 0
[7,4,6,2,8,3,1,5] => 0
[8,4,6,2,7,3,5,1] => 0
[8,3,2,6,7,4,5,1] => 0
[7,3,2,6,8,4,1,5] => 0
[6,3,2,7,8,1,4,5] => 0
[5,3,2,7,1,8,4,6] => 0
[4,3,2,1,7,8,5,6] => 0
[2,1,4,3,8,7,6,5] => 0
[3,4,1,2,8,7,6,5] => 0
[4,3,2,1,8,7,6,5] => 0
[5,3,2,8,1,7,6,4] => 0
[6,3,2,8,7,1,5,4] => 0
[7,3,2,8,6,5,1,4] => 0
[8,3,2,7,6,5,4,1] => 0
[8,4,7,2,6,5,3,1] => 0
[7,4,8,2,6,5,1,3] => 0
[6,4,8,2,7,1,5,3] => 0
[5,4,8,2,1,7,6,3] => 0
[4,5,8,1,2,7,6,3] => 0
[3,5,1,8,2,7,6,4] => 0
[2,1,5,8,3,7,6,4] => 0
[2,1,6,8,7,3,5,4] => 0
[3,6,1,8,7,2,5,4] => 0
[4,6,8,1,7,2,5,3] => 0
[5,6,8,7,1,2,4,3] => 0
[6,5,8,7,2,1,4,3] => 0
[7,5,8,6,2,4,1,3] => 0
[8,5,7,6,2,4,3,1] => 0
[8,6,7,5,4,2,3,1] => 0
[7,6,8,5,4,2,1,3] => 0
[6,7,8,5,4,1,2,3] => 0
[5,7,8,6,1,4,2,3] => 0
[4,7,8,1,6,5,2,3] => 0
[3,7,1,8,6,5,2,4] => 0
[2,1,7,8,6,5,3,4] => 0
[2,1,8,7,6,5,4,3] => 0
[3,8,1,7,6,5,4,2] => 0
[4,8,7,1,6,5,3,2] => 0
[5,8,7,6,1,4,3,2] => 0
[6,8,7,5,4,1,3,2] => 0
[7,8,6,5,4,3,1,2] => 0
[8,7,6,5,4,3,2,1] => 0
-----------------------------------------------------------------------------
Created: Jun 24, 2019 at 14:12 by Angela Carnevale
-----------------------------------------------------------------------------
Last Updated: Sep 26, 2020 at 15:36 by Martin Rubey