#include <bits/stdc++.h>
#define INF 1000000001LL
#define LNF 1000000000000000001LL
#define MOD 998244353LL
#define MAX 200001
#define long long long
#define all(x) x.begin(),x.end()
using namespace std;

void dfs(int x, int par,vector<int> graph[], vector<int>&depth)
{
    for(int y : graph[x])
    {
        if(y == par)
            continue;
        depth[y] = depth[x]+1;
        dfs(y,x,graph,depth);
    }
}
int main()
{
	ios_base::sync_with_stdio(0); 
    cin.tie(0);
    
    int t;
    cin >> t;
    while(t--)
    {
        int n,k;
        cin >> n >> k;
        vector<int> graph[n+1];

        for(int i = 0; i<n-1; i++)
        {
            int a,b;
            cin >> a >> b;

            graph[a].push_back(b);
            graph[b].push_back(a);
        }

        vector<int> depth(n+1);
        dfs(1,0,graph,depth);

        int grundy = 0;

        for(int i = 1; i<=n; i++)
        {
            int x;
            cin >> x;

            if(depth[i]&1)
                grundy^=x%(k+1);
        }

        if(grundy)
            cout << "K\n";
        else
            cout << "P\n";
    }
    return 0;
}