#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <cmath>
#include <map>
#include <queue>
#include <iomanip>
#include <set>
#include <tuple>
#define mkp make_pair
#define mkt make_tuple
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define all(v) v.begin(),v.end()
using namespace std;
typedef long long ll;
const ll MOD=1e9+7;
template<class T> void chmin(T &a,const T &b){if(a>b) a=b;}
template<class T> void chmax(T &a,const T &b){if(a<b) a=b;}

struct LowestCommonAncestor{
    #define MAX_LOG_V 25
    vector<vector<int>> g;
    int root;
    vector<int> parent[MAX_LOG_V];
    vector<int> depth;

    LowestCommonAncestor(){}
    LowestCommonAncestor(int V,int root_):g(V),depth(V){
        root=root_;
        for(int i=0;i<MAX_LOG_V;i++) parent[i].resize(V);
    }

    void initialize(int V,int root_){
        g.resize(V);
        depth.resize(V,0);
        root=root_;
        for(int i=0;i<MAX_LOG_V;i++) parent[i].resize(V);
    }

    void add_edge(int u,int v){
        g[u].push_back(v);
        g[v].push_back(u);
    }

    void dfs(int v,int p,int d){
        parent[0][v]=p;
        depth[v]=d;
        for(int i=0;i<g[v].size();i++){
            if(g[v][i]!=p) dfs(g[v][i],v,d+1);
        }
    }

    void build(int V){
        dfs(root,-1,0);
        for(int k=0;k+1<MAX_LOG_V;k++){
            for(int v=0;v<V;v++){
                if(parent[k][v]<0) parent[k+1][v]=-1;
                else parent[k+1][v]=parent[k][parent[k][v]];
            }
        }
    }

    int query(int u,int v){
        if(depth[u]>depth[v]) swap(u,v);
        for(int k=0;k<MAX_LOG_V;k++){
            if((depth[v]-depth[u])>>k&1){
                v=parent[k][v];
            }
        }
        if(u==v) return u;

        for(int k=MAX_LOG_V-1;k>=0;k--){
            if(parent[k][u]!=parent[k][v]){
                u=parent[k][u];
                v=parent[k][v];
            }
        }
        return parent[0][u];
    }
};

struct Centroid{
    vector<vector<int>> g;
    vector<int> sz,dead;

    Centroid(){}
    Centroid(int V):sz(V,1),dead(V,0),g(V){}

        void initialize(int V){
        sz.resize(V,1);
        dead.resize(V,0);
        g.resize(V);
    }

    void add_edge(int u,int v){
        g[u].push_back(v);
        g[v].push_back(u);
    }

    int szdfs(int now,int par){
        sz[now]=1;
        for(auto nex:g[now]){
            if(nex==par||dead[nex]) continue;
            sz[now]+=szdfs(nex,now);
        }
        return sz[now];
    }

    void findCentroid(int now,int par,int V,vector<int> &cens){
        bool ok=true;
        for(auto nex:g[now]){
            if(nex==par||dead[nex]) continue;
            findCentroid(nex,now,V,cens);
            if(sz[nex]>V/2) ok=false;
        }
        if(V-sz[now]>V/2) ok=false;
        if(ok) cens.push_back(now);
    }

    vector<int> build(int root){
        vector<int> cens;
        szdfs(root,-1);
        findCentroid(root,-1,sz[root],cens);
        return cens;
    }

    void kill(int now){
        dead[now]=1;
    }

    bool alive(int now){
        return dead[now]==0;
    }
};

int parent[100010];
ll sum[100010],num[100010];
map<pair<int,int>,ll> mp;
Centroid cent;
LowestCommonAncestor lca;
 
void decompose(int now,int par){
    vector<int> cs=cent.build(now);
    int C=cs[0];
    cent.kill(C);
    parent[C]=par;

    for(auto nex:cent.g[C]){
        if(cent.alive(nex)) decompose(nex,C);
    }
}

void paint(int target,bool f){
    int v=target;
    while(v!=-1){
        int u=lca.query(target,v);
        int cost=lca.depth[target]+lca.depth[v]-2*lca.depth[u];

        if(parent[v]!=-1){
            int t=lca.query(target,parent[v]);
            int tmp=lca.depth[target]+lca.depth[parent[v]]-2*lca.depth[t];
            if(f){
                mp[mkp(parent[v],v)]+=tmp;
            }else{
                mp[mkp(parent[v],v)]-=tmp;
            }
        }

        if(f){
          sum[v]+=cost;
          num[v]++;
        }else{
          sum[v]-=cost;
          num[v]--;
        }
        v=parent[v];
    }
}
 
ll query(int target){
    ll res=0;
    int v=target;
    while(v!=-1){
        int u=lca.query(target,v);
        int cost=lca.depth[target]+lca.depth[v]-2*lca.depth[u];
        res+=sum[v]+cost*num[v];
        if(parent[v]!=-1){
          int t=lca.query(target,parent[v]);
          int tmp=lca.depth[target]+lca.depth[parent[v]]-2*lca.depth[t];
          res-=(mp[mkp(parent[v],v)]+(tmp)*num[v]);
        }
        v=parent[v];
    }
    return res;
}

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);

  int N,K,Q;
  cin>>N>>K>>Q;
  vector<int> C(K);
  rep(i,K) cin>>C[i];
  rep(i,K) C[i]--;
  vector<int> U(N-1),V(N-1);
  rep(i,N-1) cin>>U[i]>>V[i];

  rep(i,N-1){
    U[i]--;V[i]--;
  }
  cent.initialize(N);
  rep(i,N-1) cent.add_edge(U[i],V[i]);
  lca.initialize(N,0);
  rep(i,N-1) lca.add_edge(U[i],V[i]);
  lca.build(N);

  decompose(0,-1);

  rep(i,K) paint(C[i],true);

  for(int q=0;q<Q;q++){
    int t;
    cin>>t;
    if(t==1){
      int p,d;
      cin>>p>>d;

      p--;d--;
      paint(C[p],false);
      C[p]=d;
      paint(C[p],true);
    }else{
      int e;
      cin>>e;
      e--;
      cout<<query(e)<<"\n";
    }
  }

  return 0;
}