#include <bits/stdc++.h>
using namespace std;
#define ll long long
inline ll read()
{
    ll al = 0, fh = 1;
    char ch = getchar();
    while (ch < '0' || ch > '9')
    {
        if (ch == '-')
            fh = -1;
        ch = getchar();
    }
    while (ch <= '9' && ch >= '0')
    {
        al = al * 10 + ch - '0';
        ch = getchar();
    }
    return al * fh;
}
const ll N = 4e5 + 10;
ll MAX = 0x7fffffffffffff;
ll MAX_CAN = 4e15;
ll num_edge, hed, til, T, n, Q, shu[N], cnt, lei;
int fat[N][11], head[N], q[N], al[N], dfn[N],  dfn_max[N];
struct bfN
{
    ll z;
    int upper[11], lower_l[11];
    int lower_r[11];
} bfn[N];
struct Edge
{
    int to, next;
} edge[N * 2];
struct node
{
    int  l, r ;
    ll z,laze_tag;
};
class seg_tree
{
public:
    node z[8 * N];
    void build(ll now, ll l, ll r)
    {
        this->z[now].l = l;
        this->z[now].r = r;
        this->z[now].laze_tag = 0;
        this->z[now].z = 0;
        if (l != r)
        {
            ll mid = (l + r) / 2;
            this->build(now * 2, l, mid);
            this->build(now * 2 + 1, mid + 1, r);
        }
    }
    void add(ll now, ll l, ll r, ll v)
    {
        ll lel = this->z[now].l, rr = this->z[now].r;
        if (lel > r || rr < l || l > r || r <= 0)
            return;
        if (lel == rr)
        {
            this->z[now].z += v;
            return;
        }
        else if (lel >= l && rr <= r)
        {
            this->z[now].laze_tag += v;
            return;
        }
        else
        {
            add(now * 2, l, r, v);
            add(now * 2 + 1, l, r, v);
            this->z[now].z = max(this->z[now * 2].z + this->z[now * 2].laze_tag, this->z[now * 2 + 1].z + this->z[now * 2 + 1].laze_tag);
        }
    }
    ll query(ll now, ll l, ll r)
    {
        ll lel = this->z[now].l, rr = this->z[now].r;
        if (lel > r || rr < l || l > r || r <= 0)
            return -MAX;
        if (lel == rr)
        {
            return this->z[now].z;
        }
        else if (lel >= l && rr <= r)
        {
            return this->z[now].z + this->z[now].laze_tag;
        }
        else
        {
            return max(query(now * 2, l, r), query(now * 2 + 1, l, r)) + this->z[now].laze_tag;
        }
    }
} a, t;
class seg_tree_jia
{
public:
    node z[8 * N];
    void build(ll now, ll l, ll r)
    {
        this->z[now].l = l;
        this->z[now].r = r;
        this->z[now].laze_tag = 0;
        this->z[now].z = 0;
        if (l != r)
        {
            ll mid = (l + r) / 2;
            this->build(now * 2, l, mid);
            this->build(now * 2 + 1, mid + 1, r);
        }
    }
    void add(ll now, ll l, ll r, ll v)
    {
        ll lel = this->z[now].l, rr = this->z[now].r;
        if (lel > r || rr < l)
            return;
        if (lel == rr)
        {
            this->z[now].z += v;
            return;
        }
        else if (lel >= l && rr <= r)
        {
            this->z[now].laze_tag += v;
            return;
        }
        else
        {
            add(now * 2, l, r, v);
            add(now * 2 + 1, l, r, v);
        }
    }
    ll query(ll now, ll l, ll r)
    {
        // return 0;
        if (l > r)
            return 0;
        if (r <= 0)
            return 0;
        ll lel = this->z[now].l, rr = this->z[now].r;
        if (lel > r || rr < l)
            return 0;
        if (lel == rr)
        {
            return this->z[now].z;
        }
        else
        {
            return query(now * 2, l, r) + query(now * 2 + 1, l, r) + this->z[now].laze_tag;
        }
    }
} b;
void add_edge(ll from, ll to)
{
    edge[++num_edge].to = to;
    edge[num_edge].next = head[from];
    head[from] = num_edge;
}
void bfs(ll now)
{
    hed = til = 0;
    q[++til] = now;
    al[now] = 1;
    bfn[now].z = ++cnt;
    bfn[now].lower_l[0] = bfn[now].z;
    bfn[now].lower_r[0] = bfn[now].z;
    bfn[now].upper[0] = now;
    while (hed < til)
    {
        hed++;
        for (ll i = head[q[hed]]; i; i = edge[i].next)
        {
            if (al[edge[i].to] == 0)
            {
                al[edge[i].to] = 1;
                bfn[edge[i].to].z = ++cnt;
                q[++til] = edge[i].to;
                bfn[edge[i].to].lower_l[0] = cnt;
                bfn[edge[i].to].lower_r[0] = cnt;
                bfn[edge[i].to].upper[0] = edge[i].to;
                for (ll j = 1; j <= 10; j++)
                {
                    bfn[edge[i].to].upper[j] = bfn[q[hed]].upper[j - 1];
                }
            }
        }
    }
}
void dfs(ll now, ll fa = 0)
{
    dfn[now] = ++cnt;
    fat[now][0] = now;
    for (ll i = 1; i <= 10; i++)
    {
        fat[now][i] = fat[fa][i - 1];
    }
    ll ok = 0;
    for (ll i = head[now]; i; i = edge[i].next)
    {
        if (edge[i].to != fa)
        {
            dfs(edge[i].to, now);
            for (ll j = 1; j <= 10; j++)
            {
                if (ok == 0)
                    bfn[now].lower_l[j] = bfn[edge[i].to].lower_l[j - 1], bfn[now].lower_r[j] = bfn[edge[i].to].lower_r[j - 1];
                else
                {
                    bfn[now].lower_l[j] = min(bfn[now].lower_l[j], bfn[edge[i].to].lower_l[j - 1]);
                    bfn[now].lower_r[j] = max(bfn[now].lower_r[j], bfn[edge[i].to].lower_r[j - 1]);
                }
            }
            ok = 1;
        }
    }
    dfn_max[now] = cnt;
}
void clear()
{
    num_edge = 0;
    for (ll i = 0; i <= n; i++)
    {
        head[i] = al[i] = dfn[i] = shu[i] = dfn_max[i] = bfn[i].z = 0;
        for (ll j = 0; j <= 10; j++)
        {
            bfn[i].lower_l[j] = 1e9+7;
            bfn[i].lower_r[j] = bfn[i].upper[j] = 0;
        }
        for (ll j = 0; j <= 10; j++)
            fat[i][j] = 0;
    }
}
signed main()
{
    // freopen("D.in","r",stdin);
    T = read();
    for (ll i = 0; i <= N; i++)
    {
        for (ll j = 0; j <= 10; j++)
        {
            bfn[i].lower_l[j] = 1e10+7;
        }
    }
    for (ll yyc = 1; yyc <= T; yyc++)
    {
        clear();
        n = read();
        Q = read();
        for (ll i = 1; i <= n; i++)
        {
            shu[i] = read();
        }
        for (ll i = 1; i < n; i++)
        {
            ll u = read(), v = read();
            add_edge(u, v);
            add_edge(v, u);
        }
        a.build(1, 1, n);
        b.build(1, 1, n);
        t.build(1, 1, n);
        cnt = 0;
        bfs(1);
        cnt = 0;
        dfs(1);
        for (ll i = 1; i <= n; i++)
        {
            a.add(1, bfn[i].z, bfn[i].z, shu[i]);
        }
        for (ll i = 1; i <= n; i++)
        {
            t.add(1, dfn[i], dfn[i], a.query(1, bfn[i].lower_l[10], bfn[i].lower_r[10]));
        }
        for (ll p = 1; p <= Q; p++)
        {
            ll o = read();
            lei++;
            if (o == 1)
            {
                ll x = read(), k = read(), v = read();
                ll l = bfn[x].lower_l[k], r = bfn[x].lower_r[k];
                a.add(1, l, r, v);
                ll zu = fat[x][10 - k];
                //t.add(1, dfn[fat[x][10 - k]], dfn[fat[x][10 - k]], b.query(1, dfn[fat[x][10 - k]], dfn[fat[x][10 - k]]) + a.query(1, bfn[zu].lower_l[10], bfn[zu].lower_r[10]) - t.query(1, dfn[fat[x][10 - k]], dfn[fat[x][10 - k]]));
                ll maxx = a.query(1, l, r) + b.query(1, dfn[fat[x][10 - k]], dfn[fat[x][10 - k]]);
                for (ll i = 1; i <= k; i++)
                {
                    ll zu = bfn[x].upper[i];
                    ll jia = b.query(1, dfn[fat[zu][10 + i - k]], dfn[fat[zu][10 + i - k]]);
                    if (zu != 0)
                    {
                        l = bfn[zu].lower_l[k - i], r = bfn[zu].lower_r[k - i];
                        zu = bfn[x].upper[i - 1];
                        if (i != k)
                        {
                            ll lel = bfn[zu].lower_l[k - i - 1], rr = bfn[zu].lower_r[k - i - 1];
                            if (lel <= rr && lel >= l && rr <= r)
                            {
                                if (l <= lel - 1)
                                {
                                    a.add(1, l, lel - 1, v);
                                    maxx = max(maxx, a.query(1, l, lel - 1) + jia);
                                }
                                if (rr + 1 <= r)
                                {
                                    a.add(1, rr + 1, r, v);
                                    maxx = max(maxx, a.query(1, rr + 1, r) + jia);
                                }
                            }
                            else
                            {
                                a.add(1, l, r, v);
                                maxx = max(maxx, a.query(1, l, r) + jia);
                            }
                        }
                        else
                        {
                            a.add(1, l, r, v);
                            maxx = max(maxx, a.query(1, l, r) + jia);
                        }
                        ll zuu = fat[zu][10 - (k - i)];
                    //    t.add(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]], b.query(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]]) + a.query(1, bfn[zuu].lower_l[10], bfn[zuu].lower_r[10]) - t.query(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]]));
                    }
                }
                if (maxx <= -MAX_CAN)
                {
                    cout << "GG\n";
                }
                else
                    cout << maxx << endl;
            }
            else if (o == 2)
            {
                ll x = read(), k = read(), v = read(), maxx = -MAX;
                for (ll i = 0; i <= k; i++)
                {
                    ll zu = fat[x][i], all = 0;
                    if (zu == 0)
                        all = 1, zu = 1;
                    if (zu == 1 && i != k)
                    {
                        all = 1;
                    }
                    ll jia = b.query(1, dfn[fat[zu][10 + i - k]], dfn[fat[zu][10 + i - k]]);
                    ll l = bfn[zu].lower_l[k - i], r = bfn[zu].lower_r[k - i];
                    a.add(1, l, r, v);
                    ll zuu = fat[zu][10 - (k - i)];
                    //t.add(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]], b.query(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]]) + a.query(1, bfn[zuu].lower_l[10], bfn[zuu].lower_r[10]) - t.query(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]]));
                    maxx = max(maxx, a.query(1, l, r) + jia);
                    if (i != k && all == 0)
                    {
                        k -= 1;
                        jia = b.query(1, dfn[fat[zu][10 + i - k]], dfn[fat[zu][10 + i - k]]);
                        l = bfn[zu].lower_l[k - i], r = bfn[zu].lower_r[k - i];
                        a.add(1, l, r, v);
                        ll zuu = fat[zu][10 - (k - i)];
                        t.add(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]], b.query(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]]) + a.query(1, bfn[zuu].lower_l[10], bfn[zuu].lower_r[10]) - t.query(1, dfn[fat[zu][10 - (k - i)]], dfn[fat[zu][10 - (k - i)]]));
                        maxx = max(maxx, a.query(1, l, r) + jia);
                        k += 1;
                    }
                }
                if (maxx <= -MAX_CAN)
                {
                    cout << "GG\n";
                }
                else
                    cout << maxx << endl;
            }
            else
            {
                ll x = read(), v = read(), maxx = -MAX;
                for (ll i = 0; i < 10; i++)
                {
                    a.add(1, bfn[x].lower_l[i], bfn[x].lower_r[i], v);
                    ll zu = fat[x][10 - i];
                    t.add(1, dfn[zu], dfn[zu], b.query(1, dfn[zu], dfn[zu]) + a.query(1, bfn[zu].lower_l[10], bfn[zu].lower_r[10]) - t.query(1, dfn[zu], dfn[zu]));
                    maxx = max(maxx, a.query(1, bfn[x].lower_l[i], bfn[x].lower_r[i]) + b.query(1, dfn[zu], dfn[zu]));
                }
                b.add(1, dfn[x], dfn_max[x], v);
                t.add(1, dfn[x], dfn_max[x], v);
                // cout<<dfn[x]<<" "<<dfn_max[x]<<" "<<v<<":";
                maxx = max(maxx, t.query(1, dfn[x], dfn_max[x]));
                if (maxx <= -MAX_CAN)
                {
                    cout << "GG\n";
                }
                else
                    cout << maxx << endl;
            }
        }
    }
}