#include <bits/stdc++.h>
#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
using namespace std;
const int mod = 1e9 + 7;
long double PI = acosl(-1);
const long long infl = 1e18 + 100;
const int inf = 2e9 + 100;
const int nmax = 1e5 + 5;
const int MAXLG = log2(nmax) + 1;
vector<int> g[nmax];
int to[nmax], w[nmax];
long long dst[nmax];
long long bara[nmax];
queue<int> q[nmax];
void dijik(int n) {
  for (int i = 1; i <= n; i++) dst[i] = infl;
  dst[1] = 0;
  priority_queue<pair<long long, int> > pq;
  pq.push({0, 1});
  while (!pq.empty()) {
    auto z = pq.top();
    pq.pop();
    long long d = -z.first;
    int u = z.second;
    if (d != dst[u]) continue;
    for (int idx : g[u]) {
      int v = to[idx];
      if (dst[v] > dst[u] + w[idx]) {
        dst[v] = dst[u] + w[idx];
        pq.push({-dst[v], v});
      }
    }
  }
}
void bfs(int n) {
  for (int i = 1; i <= n; i++) bara[i] = infl;
  for (int i = 1; i <= n; i++)
    while (!q[i].empty()) q[i].pop();
  q[0].push(1);
  bara[1] = 0;
  for (int i = 0; i <= n; i++) {
    while (!q[i].empty()) {
      int u = q[i].front();
      q[i].pop();
      if (bara[u] != i) continue;
      for (int idx : g[u]) {
        int v = to[idx];
        long long cur = dst[u] - dst[v] + w[idx] + i;
        if (bara[v] > cur and cur >= 0 and cur <= n) {
          bara[v] = cur;
          q[cur].push(v);
        }
      }
    }
  }
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int n, m, q;
  cin >> n >> m >> q;
  for (int i = 1; i <= m; i++) {
    int u;
    cin >> u >> to[i] >> w[i];
    g[u].push_back(i);
  }
  dijik(n);
  while (q--) {
    int typ;
    cin >> typ;
    if (typ == 1) {
      int u;
      cin >> u;
      if (dst[u] == infl)
        cout << "-1\n";
      else
        cout << dst[u] << "\n";
    } else {
      int koyta;
      cin >> koyta;
      for (int i = 0; i < koyta; i++) {
        int idx;
        cin >> idx;
        w[idx]++;
      }
      bfs(n);
      for (int i = 1; i <= n; i++)
        if (dst[i] != infl and bara[i] != infl) {
          dst[i] += bara[i];
        }
    }
  }
}
