There are $n$ states in a country. The states are connected to each other by undirected borders and there are total $n - 1$ borders between different pairs of states. These borders form a tree. The strength of a border i is $ten[i]$.

Each state grows some fruits. Initially, there are no fruits in any states. The rate at which a fruit is grown in state $i$ is $R[i]$ per unit time. A country that is defined as a tree of connected states is considered rich at an instant if all the states contain at least $X$ fruits.

A company wants to buy these fruits. It buys fruits from the state that contains the lowest production rate in the country and it visits a country only if it is rich. If there are multiple such countries, the company randomly chooses one state and buys from it.

You are required to answer $q$ queries that are represented as follows:

The $i^{th}$ query consists of three space-separated integers $a_i, b_i, c_i$. They allow you to generate $D_i,\ T_i,\ and\ X_i$ as $Di=a_i \hat{} ans_{i-1}$, $Ti=b_i \hat{} ans_{i-1}$, and $Xi=c_i \hat{} ans_{i-1}$, where $ans_i$ is the answer to the $i^{th}$ query and $ans_0=0$. 

At $t=0$, borders whose strength value is greater than $D_i$ splits apart and the remaining connected states form separate countries. Your task is to determine the total number of fruits that the company can collect at time $T_i$.

Note: Each query is independent in nature. 

You are required to answer these queries online because the input of the next query depends on the answer of the previous query.

Input format

• First line: $n$ and $q$ 
• $n-1$ lines: Three space-separated integers $u\ v\ w$ that represent state $u$ and state $v$ share border whose strength value is $w$
• Next line: n space-separated integers where the $i^{th}$ integer is $R[i]$
• q lines: Three space-separated integers that are defined in the question

Output format

For each query, print the answer in a new line.

Constraints

$1\leq n,q\leq 2\cdot10^5$

$0 \leq ten[i], X[i], T[i], D[i] \leq 10^8$

$0\leq R[i] \leq 10^5$

$0 \leq a_i,b_i,c_i < 2^{62}$

Note: $X[i],\ T[i],\ and\ D[i]$ are generated internally but you must consider these constraints