import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes")
no = lambda :print("no");No = lambda :print("No")
#######################################################################
# Binary Indexed Tree (Fenwick Tree)
# 0-indexed
class BIT:
    def __init__(self, n):
        self.n = n
        self.data = [0]*(n+1)
        self.el = [0]*(n+1)
    def sum(self, i):
        s = 0
        while i > 0:
            s += self.data[i]
            i -= i & -i
        return s
    def add(self, i, x):
        assert 0 <= i < self.n
        i = i+1
        self.el[i] += x
        while i <= self.n:
            self.data[i] += x
            i += i & -i
    def set(self, i, x):
        assert 0 <= i <= self.n
        self.add(i,x-self.get(i))
    def get(self, i, j=None):# j=Noneのときiを取得, [i, j)の和を取得
        if j is None:
            return self.el[i+1]
        return self.sum(j) - self.sum(i)
    def lower_bound(self, k):# a[0],…,a[i]>kなる最小のi
        x = 0
        r = 1
        while r <= n:r <<= 1
        size = r
        while size:
            if x + size <= n and self.data[x+size] <= k:
                k-=self.data[x+size]
                x += size
            size >>= 1
        return x
    def debug(self):
        res = []
        n = self.n
        for i in range(n):
            res.append(self.get(i))
        print(*res)

for _ in range(ni()):
    n = ni()
    p = [x-1 for x in na()]
    ansl = []
    ansr = []
    bit = BIT(n)
    f = 0
    for i in range(n):
        x = bit.get(0, p[i])
        if x*2 < i:
            f += x
            ansl.append(p[i]+1)
        else:
            f += i - x
            ansr.append(p[i]+1)
        bit.add(p[i], 1)
    print(f)
    print(*(ansl[::-1] + ansr))