#include <bits/stdc++.h>
#pragma GCC optimize("Ofast", "unroll-loops", "omit-frame-pointer", "inline")
#pragma GCC option("arch=native", "tune=native", "no-zero-upper")
#pragma GCC target("avx2")
using namespace std;
const int maxn = 100005;
int N, M, Q, to[maxn], w[maxn], delta[maxn];
long long dis[maxn];
vector<int> g[maxn];
queue<int> q[maxn];
inline void init() {
  memset(dis, 0x3f, sizeof dis);
  priority_queue<pair<long long, int>, vector<pair<long long, int>>,
                 greater<pair<long long, int>>>
      q;
  q.push(make_pair(0, 1));
  dis[1] = 0;
  while (q.size()) {
    long long d = q.top().first;
    int node = q.top().second;
    q.pop();
    if (dis[node] < d) continue;
    for (int ck : g[node]) {
      int nxt = to[ck], cost = w[ck];
      if (dis[nxt] > d + cost) {
        dis[nxt] = d + cost;
        q.push(make_pair(dis[nxt], nxt));
      }
    }
  }
}
inline void recompute(int lim) {
  memset(delta, 0x3f, sizeof delta);
  delta[1] = 0, q[0].push(1);
  for (int i = 0; i <= lim; i++) {
    while (q[i].size()) {
      int node = q[i].front();
      q[i].pop();
      if (delta[node] < i) continue;
      for (int ck : g[node]) {
        int nxt = to[ck];
        long long n_d = dis[node] + delta[node] + w[ck] - dis[nxt];
        if (n_d < delta[nxt] && n_d <= lim) {
          delta[nxt] = n_d;
          q[n_d].push(nxt);
        }
      }
    }
  }
  for (int i = 1; i <= N; i++) {
    if (delta[i] == 0x3f3f3f3f) continue;
    dis[i] += delta[i];
  }
}
int main() {
  ios::sync_with_stdio(0);
  cin.tie(0);
  cin >> N >> M >> Q;
  for (int i = 1; i <= M; i++) {
    int a;
    cin >> a >> to[i] >> w[i];
    g[a].push_back(i);
  }
  init();
  while (Q--) {
    int op, v;
    cin >> op >> v;
    if (op == 1)
      cout << (dis[v] == 0x3f3f3f3f3f3f3f3fLL ? -1 : dis[v]) << '\n';
    else {
      for (int i = 1; i <= v; i++) {
        int a;
        cin >> a;
        w[a]++;
      }
      recompute(v);
    }
  }
}
