You are given a tree with $n$ vertices, whose vertices are numbered from $1$ to $n$. Each edge is labeled with some integer $w_i$.

Define $len(u, v)$ as the number of edges in the simple path between vertices $u$ and $v$, and $gcd(u, v)$ as the Greatest Common Divisor of all numbers written on the edges of the simple path between vertices $u$ and $v$. For example, $len(u, u) = 0$ and $gcd(u, u) = 0$ for any $1 \leq u \leq n$.

You need to find the maximum value of $len(u, v) \cdot gcd(u, v)$ over all pairs of vertices in the tree.

Input

Each test consists of multiple test cases. The first line contains a single integer $t$ ($1 \leq t \leq 10^4$) — the number of test cases. This is followed by their description.

The first line of each test case contains the number $n$ ($2 \leq n \leq 10^5$) — the number of vertices in the tree.

The next $n-1$ lines specify the edges in the format $u$, $v$, $w$ ($1 \leq u, v \leq n$, $1 \leq w \leq 10^{12}$).

It is guaranteed that the sum of $n$ over all test cases does not exceed $10^5$.

Output

For each test case, output a single number equal to the maximum value of $len(u, v) \cdot gcd(u, v)$ over all pairs of vertices in the tree.

见题面 Input 部分

见题面 Output 部分