Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.

No tag edit access

H. Red Blue Tree

time limit per test

5 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputYou are given a tree of $$$n$$$ nodes. The tree is rooted at node $$$1$$$, which is not considered as a leaf regardless of its degree.

Each leaf of the tree has one of the two colors: red or blue. Leaf node $$$v$$$ initially has color $$$s_{v}$$$.

The color of each of the internal nodes (including the root) is determined as follows.

- Let $$$b$$$ be the number of blue immediate children, and $$$r$$$ be the number of red immediate children of a given vertex.
- Then the color of this vertex is blue if and only if $$$b - r \ge k$$$, otherwise red.

Integer $$$k$$$ is a parameter that is same for all the nodes.

You need to handle the following types of queries:

- 1 v: print the color of node $$$v$$$;
- 2 v c: change the color of leaf $$$v$$$ to $$$c$$$ ($$$c = 0$$$ means red, $$$c = 1$$$ means blue);
- 3 h: update the current value of $$$k$$$ to $$$h$$$.

Input

The first line of the input consists of two integers $$$n$$$ and $$$k$$$ ($$$2 \le n \le 10^{5}$$$, $$$-n \le k \le n$$$) — the number of nodes and the initial parameter $$$k$$$.

Each of the next $$$n - 1$$$ lines contains two integers $$$u$$$ and $$$v$$$ ($$$1 \le u,v \le n$$$), denoting that there is an edge between vertices $$$u$$$ and $$$v$$$.

The next line consists of $$$n$$$ space separated integers — the initial array $$$s$$$ ($$$-1 \le s_i \le 1$$$). $$$s_{i} = 0$$$ means that the color of node $$$i$$$ is red. $$$s_{i} = 1$$$ means that the color of node $$$i$$$ is blue. $$$s_{i} = -1$$$ means that the node $$$i$$$ is not a leaf.

The next line contains an integer $$$q$$$ ($$$1 \le q \le 10^5$$$), the number of queries.

$$$q$$$ lines follow, each containing a query in one of the following queries:

- 1 v ($$$1 \le v \le n$$$): print the color of node $$$v$$$;
- 2 v c ($$$1 \le v \le n$$$, $$$c = 0$$$ or $$$c = 1$$$): change the color of leaf $$$v$$$ to $$$c$$$ ($$$c = 0$$$ means red, $$$c = 1$$$ means blue). It is guaranteed that $$$v$$$ is a leaf;
- 3 h ($$$-n \le h \le n$$$): update the current value of $$$k$$$ to $$$h$$$.

Output

For each query of the first type, print $$$0$$$ if the color of vertex $$$v$$$ is red, and $$$1$$$ otherwise.

Example

Input

5 2 1 2 1 3 2 4 2 5 -1 -1 0 1 0 9 1 1 1 2 3 -2 1 1 1 2 3 1 2 5 1 1 1 1 2

Output

0 0 1 1 0 1

Note

(i) The initial tree

(ii) The tree after the 3rd query

(iii) The tree after the 7th query

Codeforces (c) Copyright 2010-2020 Mike Mirzayanov

The only programming contests Web 2.0 platform

Server time: Jan/22/2020 12:32:45 (f3).

Desktop version, switch to mobile version.

Supported by

User lists

Name |
---|