#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 5;
const long long inf = 1e16;
int n, m, qry;
struct node {
  int v, id;
  long long w;
};
vector<node> g[N];
struct point {
  int num;
  long long dis;
  bool operator<(const point &x) const { return this->dis > x.dis; }
};
priority_queue<point> q;
bool vis[N], cha[N];
long long dis[N];
void Dijkstra(int s) {
  for (int i = 1; i <= n; i++) {
    dis[i] = inf;
  }
  q.push((point){s, 0});
  dis[s] = 0;
  while (!q.empty()) {
    int u = q.top().num;
    q.pop();
    if (vis[u]) {
      continue;
    }
    vis[u] = 1;
    for (unsigned i = 0; i < g[u].size(); i++) {
      int v = g[u][i].v;
      long long w = g[u][i].w;
      if (dis[v] > dis[u] + w) {
        dis[v] = dis[u] + w;
        q.push((point){v, dis[v]});
      }
    }
  }
  for (int i = 1; i <= n; i++) {
    if (dis[i] == inf) {
      dis[i] = -1;
    }
  }
}
long long add[N];
queue<int> cnt[N];
void solve(int s, int k) {
  memset(vis, 0, sizeof(vis));
  for (int i = 1; i <= n; i++) {
    add[i] = k + 1;
  }
  cnt[0].push(s);
  add[s] = 0;
  for (int j = 0; j <= k; j++) {
    while (!cnt[j].empty()) {
      int u = cnt[j].front();
      cnt[j].pop();
      if (vis[u]) {
        continue;
      }
      vis[u] = 1;
      for (unsigned i = 0; i < g[u].size(); i++) {
        int v = g[u][i].v;
        long long w = dis[u] + g[u][i].w - dis[v];
        if (add[v] > add[u] + w) {
          add[v] = add[u] + w;
          cnt[add[v]].push(v);
        }
      }
    }
  }
  for (int i = 1; i <= n; i++) {
    dis[i] = add[i] == (k + 1) ? -1 : dis[i] + add[i];
  }
}
int main() {
  scanf("%d%d%d", &n, &m, &qry);
  for (int i = 1, u, v, w; i <= m; i++) {
    scanf("%d%d%d", &u, &v, &w);
    g[u].push_back((node){v, i, w});
  }
  Dijkstra(1);
  for (int i = 1, opt, u, k, x; i <= qry; i++) {
    scanf("%d", &opt);
    if (opt == 1) {
      scanf("%d", &u);
      printf("%lld\n", dis[u]);
    } else {
      scanf("%d", &k);
      for (int j = 1; j <= k; j++) {
        scanf("%d", &x);
        cha[x] = 1;
      }
      for (int u = 1; u <= n; u++) {
        for (unsigned j = 0; j < g[u].size(); j++) {
          int id = g[u][j].id;
          if (cha[id]) {
            g[u][j].w++;
            cha[id] = 0;
          }
        }
      }
      solve(1, k);
    }
  }
  return 0;
}
