using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var t = NN;
        var ans = new bool[t];
        for (var u = 0; u < t; ++u)
        {
            var c = NList;
            var (n, k) = (c[0], c[1]);
            var map = NMap(n - 1);
            var a = NList;
            ans[u] = Rooted(n, k, map, a);
        }
        WriteLine(string.Join("\n", ans.Select(f => f ? "K" : "P")));
    }
    static bool Rooted(int n, int k, int[][] map, int[] a)
    {
        var tree = new List<int>[n];
        for (var i = 0; i < tree.Length; ++i) tree[i] = new List<int>();
        foreach (var edge in map)
        {
            tree[edge[0]].Add(edge[1]);
            tree[edge[1]].Add(edge[0]);
        }
        var len = Enumerable.Repeat(int.MaxValue / 2, n).ToArray();
        len[0] = 0;
        var q = new Queue<int>();
        q.Enqueue(0);
        while (q.Count > 0)
        {
            var cur = q.Dequeue();
            foreach (var next in tree[cur])
            {
                if (len[next] <= len[cur] + 1) continue;
                len[next] = len[cur] + 1;
                q.Enqueue(next);
            }
        }
        var g = 0;
        for (var i = 0; i < n; ++i) if (len[i] % 2 == 1) g ^= a[i] % (k + 1);
        return g != 0;
    }
}