/*=================================*\
| |
| Md. Shahidul Islam |
| CSE, BRUR |
| Rangpur, Bangladesh |
| mail: shahidul.cse.brur@gmail.com |
| FB : fb.com/shahidul.brur |
| Blog: shahidul-brur.blogspot.com |
\*=================================*/
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsinged long long
#define vi vector<int>
#define vll vector<ll>
#define pii pair<int, int>
#define vii vector<pair<int, int> >
#define vs vector<string>
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define sz size()
#define all(a) a.begin(), a.end()
#define F(i, a, b) for(int i=a;i<=b;i++)
#define rep(i, k) for(int i=0;i<k;i++)
#define rep1(i, k) for(int i=1;i<=k;i++)
#define FORR(i, b, a) for(int i=b;i>=a;i--)
#define FOR(i, a, b) for(int i=a;i<=b;i++)
#define pi acos(-1.0)
#define eps 1e-6
#define mem(a, b) memset(a, b, sizeof(a))
#define mod 1000000007
#define N 10005
#define inf 1e9
#define LN 14
vii tree[N];
vi edgeCost[N];
int chainHead[N], chainIndex[N], par[N][LN+5], depth[N], subSize[N], arrPos[N];
int endNode[N], chainNo, pos;
int costArr[N], segTree[N*4];
void initialize(int n)
{
for(int i=0;i<=n;i++)
{
tree[i].clear();
edgeCost[i].clear();
chainHead[i] = -1;
for(int j=0;j<LN;j++)
{
par[i][j] = -1;
}
}
}
void dfs(int node, int parent, int d)
{
depth[node] = d;
subSize[node] = 1;
par[node][0] = parent;
int siz = tree[node].sz;
for(int i=0;i<siz;i++)
{
int next = tree[node][i].ff;
int ind = tree[node][i].ss;
if(next!=parent)
{
endNode[ind] = next;
dfs(next, node, d+1);
subSize[node]+=subSize[next];
}
}
}
void initLCA(int n)
{
for(int i=1;i<=n;i++)
{
for(int j=1;j<LN;j++)
{
int pre = par[i][j-1];
if(pre!=-1)
par[i][j] = par[pre][j-1];
}
}
}
void HLD(int node, int cost, int parent)
{
if(chainHead[chainNo]==-1)
chainHead[chainNo] = node;
pos++;
chainIndex[node] = chainNo;
costArr[pos] = cost;
arrPos[node] = pos;
int siz = tree[node].sz;
int heavyNode = -1;
int heavyCost = 0;
for(int i=0;i<siz;i++)
{
int next = tree[node][i].ff;
if(next==parent)
continue;
if(heavyNode==-1 || subSize[next]>subSize[heavyNode])
{
heavyNode = next;
heavyCost = edgeCost[node][i];
}
}
if(heavyNode!=-1)
HLD(heavyNode, heavyCost, node);
for(int i=0;i<siz;i++)
{
int next = tree[node][i].ff;
if(next!=parent && next!=heavyNode)
{
chainNo++;
HLD(next, edgeCost[node][i], node);
}
}
}
void buildSegTree(int node, int b, int e)
{
if(b==e)
{
segTree[node] = costArr[b];
return;
}
int mid = (b+e)>>1;
int l = node<<1;
int r = l+1;
buildSegTree(l, b, mid);
buildSegTree(r, mid+1, e);
segTree[node] = max(segTree[l], segTree[r]);
}
int querySegTree(int node, int b, int e, int l, int r)
{
if(l>e || r<b)
return 0;
if(b>=l && e<=r)
return segTree[node];
int mid = (b+e)>>1;
int left = node<<1;
int right = left+1;
int q1 = querySegTree(left, b, mid, l, r);
int q2 = querySegTree(right, mid+1, e, l, r);
return max(q1, q2);
}
void updateSegTree(int node, int b, int e, int p, int val)
{
if(b==e)
{
segTree[node] = val;
return;
}
int mid = (b+e)>>1;
int l = node<<1;
int r = l+1;
if(p<=mid)
updateSegTree(l, b, mid, p, val);
else updateSegTree(r, mid+1, e, p, val);
segTree[node] = max(segTree[l], segTree[r]);
}
int LCA(int u, int v)
{
if(depth[u]<depth[v])
swap(u, v);
for(int i = LN-1;i>=0;i--)
{
if(depth[u] - (1<<i)>=depth[v])
u = par[u][i];
}
if(u==v)
return u;
for(int i = LN-1;i>=0;i--)
{
if(par[u][i]!=-1 && par[u][i]!=par[v][i])
{
u = par[u][i];
v = par[v][i];
}
}
return par[u][0];
}
int queryUp(int u, int v)
{
if(u==v)
return 0;
int lchain, rchain = chainIndex[v];
int ans = -1;
while(1)
{
lchain = chainIndex[u];
if(lchain==rchain)
{
if(u==v)
break;
int cur = querySegTree(1, 1, pos, arrPos[v]+1, arrPos[u]);
ans = max(cur, ans);
break;
}
int cur = querySegTree(1, 1, pos, arrPos[chainHead[lchain]], arrPos[u]);
ans = max(ans, cur);
u = chainHead[lchain];
u = par[u][0];
}
return ans;
}
int queryPath(int u, int v)
{
int lca = LCA(u, v);
int a = queryUp(u, lca);
int b = queryUp(v, lca);
return max(a, b);
}
void update(int idx, int val)
{
int node = endNode[idx];
updateSegTree(1, 1, pos, arrPos[node], val);
}
int main()
{
//freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
//ios_base::sync_with_stdio(false); cin.tie(NULL);
int t, n, u, v;
int cost;
scanf("%d", &t);
while(t--)
{
scanf("%d", &n);
initialize(n);
for(int i=1;i<n;i++)
{
scanf("%d %d", &u, &v);
scanf("%d", &cost);
tree[u].pb(pii(v, i));
tree[v].pb(pii(u, i));
edgeCost[u].pb(cost);
edgeCost[v].pb(cost);
}
dfs(1, 0, 0);
initLCA(n);
pos = -1;
chainNo = 1;
HLD(1, 0, -1);
buildSegTree(1, 1, pos);
char cmd[14];
scanf("%s", cmd);
while(cmd[0]!='D')
{
if(cmd[0]=='Q')
{
scanf("%d %d", &u, &v);
printf("%d\n", queryPath(u, v));
}
else
{
int edge;
int val;
scanf("%d", &edge);
scanf("%d", &val);
update(edge, val);
}
scanf("%s", cmd);
}
}
return 0;
}
/*=================================*\
|                                   |
|      Md. Shahidul Islam           |
|         CSE, BRUR                 |
|      Rangpur, Bangladesh          |
| mail: shahidul.cse.brur@gmail.com |
| FB  : fb.com/shahidul.brur        |
| Blog: shahidul-brur.blogspot.com  |
\*=================================*/
#include <bits/stdc++.h>
using namespace std;

#define ll       long long
#define ull      unsinged long long
#define vi       vector<int>
#define vll      vector<ll>
#define pii      pair<int, int>
#define vii      vector<pair<int, int> >
#define vs       vector<string>

#define pb              push_back
#define mp              make_pair
#define ff              first
#define ss              second
#define sz              size()
#define all(a)          a.begin(), a.end()
#define F(i, a, b)      for(int i=a;i<=b;i++)
#define rep(i, k)       for(int i=0;i<k;i++)
#define rep1(i, k)      for(int i=1;i<=k;i++)
#define FORR(i, b, a)   for(int i=b;i>=a;i--)
#define FOR(i, a, b)    for(int i=a;i<=b;i++)
#define pi              acos(-1.0)
#define eps             1e-6
#define mem(a, b)       memset(a, b, sizeof(a))
#define mod             1000000007
#define N               10005
#define inf             1e9
#define LN              14
vii tree[N];
vi edgeCost[N];
int chainHead[N], chainIndex[N], par[N][LN+5], depth[N], subSize[N], arrPos[N];
int endNode[N], chainNo, pos;
int costArr[N], segTree[N*4];

void initialize(int n)
{
    for(int i=0;i<=n;i++)
    {
        tree[i].clear();
        edgeCost[i].clear();
        chainHead[i] = -1;
        for(int j=0;j<LN;j++)
        {
            par[i][j] = -1;
        }
    }
}
void dfs(int node, int parent, int d)
{
    depth[node] = d;
    subSize[node] = 1;
    par[node][0] = parent;
    int siz = tree[node].sz;
    for(int i=0;i<siz;i++)
    {
        int next = tree[node][i].ff;
        int ind = tree[node][i].ss;
        if(next!=parent)
        {
            endNode[ind] = next;
            dfs(next, node, d+1);
            subSize[node]+=subSize[next];
        }
    }
}
void initLCA(int n)
{
    for(int i=1;i<=n;i++)
    {
        for(int j=1;j<LN;j++)
        {
            int pre = par[i][j-1];
            if(pre!=-1)
                par[i][j] = par[pre][j-1];
        }
    }
}
void HLD(int node, int cost, int parent)
{
    if(chainHead[chainNo]==-1)
        chainHead[chainNo] = node;
    
    pos++;
    chainIndex[node] = chainNo;
    costArr[pos] = cost;
    arrPos[node] = pos;
    
    int siz = tree[node].sz;
    int heavyNode = -1;
    int heavyCost = 0;
    
    for(int i=0;i<siz;i++)
    {
        int next = tree[node][i].ff;
        if(next==parent)
            continue;
        if(heavyNode==-1 || subSize[next]>subSize[heavyNode])
        {
            heavyNode = next;
            heavyCost = edgeCost[node][i];
        }
    }
    
    if(heavyNode!=-1)
        HLD(heavyNode, heavyCost, node);
    
    for(int i=0;i<siz;i++)
    {
        int next = tree[node][i].ff;
        if(next!=parent && next!=heavyNode)
        {
            chainNo++;
            HLD(next, edgeCost[node][i], node);
        }
    }
}
void buildSegTree(int node, int b, int e)
{
    if(b==e)
    {
        segTree[node] = costArr[b];
        return;
    }
    int mid = (b+e)>>1;
    int l = node<<1;
    int r = l+1;
    buildSegTree(l, b, mid);
    buildSegTree(r, mid+1, e);
    segTree[node] = max(segTree[l], segTree[r]);
}
int querySegTree(int node, int b, int e, int l, int r)
{
    if(l>e || r<b)
        return 0;
    if(b>=l && e<=r)
        return segTree[node];
    int mid = (b+e)>>1;
    int left = node<<1;
    int right = left+1;
    int q1 = querySegTree(left, b, mid, l, r);
    int q2 = querySegTree(right, mid+1, e, l, r);
    return max(q1, q2);
}
void updateSegTree(int node, int b, int e, int p, int val)
{
    if(b==e)
    {
        segTree[node] = val;
        return;
    }
    int mid = (b+e)>>1;
    int l = node<<1;
    int r = l+1;
    if(p<=mid)
        updateSegTree(l, b, mid, p, val);
    else updateSegTree(r, mid+1, e, p, val);
    segTree[node] = max(segTree[l], segTree[r]);
}
int LCA(int u, int v)
{
    if(depth[u]<depth[v])
        swap(u, v);
    for(int i = LN-1;i>=0;i--)
    {
        if(depth[u] - (1<<i)>=depth[v])
            u = par[u][i];
    }
    
    if(u==v)
        return u;
    for(int i = LN-1;i>=0;i--)
    {
        if(par[u][i]!=-1 && par[u][i]!=par[v][i])
        {
            u = par[u][i];
            v = par[v][i];
        }
    }
    return par[u][0];
}
int queryUp(int u, int v)
{
    if(u==v)
        return 0;
    int lchain, rchain = chainIndex[v];
    int ans = -1;
    while(1)
    {
        lchain = chainIndex[u];
        if(lchain==rchain)
        {
            if(u==v)
                break;
            int cur = querySegTree(1, 1, pos, arrPos[v]+1, arrPos[u]);
            ans = max(cur, ans);
            break;
        }
        int cur = querySegTree(1, 1, pos, arrPos[chainHead[lchain]], arrPos[u]);
        ans = max(ans, cur);
        u = chainHead[lchain];
        u = par[u][0];
    }
    return ans;
}
int queryPath(int u, int v)
{
    
    int lca = LCA(u, v);
    
    int a = queryUp(u, lca);
    int b = queryUp(v, lca);
    return max(a, b);
}
void update(int idx, int val)
{
    int node = endNode[idx];
    updateSegTree(1, 1, pos, arrPos[node], val);
}
int main()
{
    //freopen("in.txt", "r", stdin);
    //freopen("out.txt", "w", stdout);
    //ios_base::sync_with_stdio(false); cin.tie(NULL);
    int t, n, u, v;
    int cost;
    scanf("%d", &t);
    while(t--)
    {
        scanf("%d", &n);
        initialize(n);
        for(int i=1;i<n;i++)
        {
            scanf("%d %d", &u, &v);
            scanf("%d", &cost);
            tree[u].pb(pii(v, i));
            tree[v].pb(pii(u, i));
            
            edgeCost[u].pb(cost);
            edgeCost[v].pb(cost);
        }
        dfs(1, 0, 0);
        
        initLCA(n);
        
        pos = -1;
        chainNo = 1;
        HLD(1, 0, -1);
        
        buildSegTree(1, 1, pos);
        char cmd[14];
        scanf("%s", cmd);
        while(cmd[0]!='D')
        {
            if(cmd[0]=='Q')
            {
                scanf("%d %d", &u, &v);
                printf("%d\n", queryPath(u, v));
            }
            else
            {
                int edge;
                int val;
                scanf("%d", &edge);
                scanf("%d", &val);
                update(edge, val);
            }
            scanf("%s", cmd);
        }
    }
    return 0;
}
