CF1711A.Perfect Permutation

传统题 时间 2000 ms 内存 256 MiB 3 尝试 1 已通过 1 标签

Perfect Permutation

You are given a positive integer nn.

The weight of a permutation p1,p2,,pnp_1, p_2, \ldots, p_n is the number of indices 1in1\le i\le n such that ii divides pip_i. Find a permutation p1,p2,,pnp_1,p_2,\dots, p_n with the minimum possible weight (among all permutations of length nn).

A permutation is an array consisting of nn distinct integers from 11 to nn in arbitrary order. For example, [2,3,1,5,4][2,3,1,5,4] is a permutation, but [1,2,2][1,2,2] is not a permutation (22 appears twice in the array) and [1,3,4][1,3,4] is also not a permutation (n=3n=3 but there is 44 in the array).

Input

Each test contains multiple test cases. The first line contains the number of test cases tt (1t1041 \leq t \leq 10^4). The description of the test cases follows.

The only line of each test case contains a single integer nn (1n1051 \leq n \leq 10^5) — the length of permutation.

It is guaranteed that the sum of nn over all test cases does not exceed 10510^5.

Output

For each test case, print a line containing nn integers p1,p2,,pnp_1, p_2,\dots, p_n so that the permutation pp has the minimum possible weight.

If there are several possible answers, you can print any of them.

Note

In the first test case, the only valid permutation is p=[1]p=[1]. Its weight is 11.

In the second test case, one possible answer is the permutation p=[2,1,4,3]p=[2,1,4,3]. One can check that 11 divides p1p_1 and ii does not divide pip_i for i=2,3,4i=2,3,4, so the weight of this permutation is 11. It is impossible to find a permutation of length 44 with a strictly smaller weight.

Samples

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