#include<bits/stdc++.h>
#include <iostream>
using namespace std;
#include<atcoder/all>
using namespace atcoder;
using ll = long long;
int N,K;
vector<vector<int>> G;
vector<int> A;
vector<int> depth;

void dfs(int v,int p,int d){
	depth[v] = d;
	for(int u:G[v]){
		if(u==p) continue;
		dfs(u,v,d+1);
	}
}

void solve(){
	depth = vector<int>(N,0);
	dfs(0,-1,0);
	vector<int> depthxor(N);
	for(int i = 0;i<N;i++){
		A[i] %= K+1;
	}
	int x = 0;
	for(int i = 0;i<N;i++){
		if(depth[i]%2==1){
			x ^= A[i];
		}
	}
	sort(depthxor.begin(),depthxor.end());
	if(x==0){
		cout<<"P"<<endl;
	}else{
		cout<<"K"<<endl;
	}
}

signed main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	int T;
	cin >> T;
	for(int t= 0;t<T;t++){
		cin >> N >> K;
		G = vector<vector<int>>(N);
		A.resize(N);
		for(int i = 0;i<N-1;i++){
			int u,v;
			cin >> u >> v;
			u--; v--;
			G[u].push_back(v);
			G[v].push_back(u);
		}
		for(int i = 0;i<N;i++) cin >> A[i];
		if(t==23)cerr<<N<<endl;
		solve();
	}
}