#include <bits/stdc++.h>
namespace IO {
const long long IN_LEN = 1 << 18 | 1;
static char buf[IN_LEN], *s, *t;
inline long long Getchar(void) {
  return s == t && (t = (s = buf) + fread(buf, 1, IN_LEN, stdin)),
         s == t ? -1 : *s++;
}
template <class T>
inline void read(T& x) {
  static long long c, f;
  c = Getchar(), x = f = 0;
  while (c < '0' || c > '9') {
    if (c == '-') f = 1;
    c = Getchar();
  }
  while (c <= '9' && c >= '0') x = x * 10 + c - 48, c = Getchar();
  x = f ? -x : x;
}
}  // namespace IO
using IO::read;
using namespace std;
const long long N = 1e5 + 5;
const long long INF = 0x3f3f3f3f3f3f3f3fLL;
long long head[N], eidx, dis[N], n, m, f[N];
struct Edge {
  long long nxt, to, val;
} edge[N];
queue<long long> q[N];
priority_queue<pair<long long, long long>, vector<pair<long long, long long> >,
               greater<pair<long long, long long> > >
    Q;
void dij(void) {
  static long long u, w;
  memset(dis, 0x3f, sizeof dis);
  Q.push(pair<long long, long long>(dis[1] = 0, 1));
  while (!Q.empty()) {
    u = Q.top().second, w = Q.top().first;
    Q.pop();
    if (dis[u] != w) continue;
    for (long long i = head[u], v; i; i = edge[i].nxt)
      if (dis[v = edge[i].to] > dis[u] + edge[i].val)
        Q.push(pair<long long, long long>(dis[v] = dis[u] + edge[i].val, v));
  }
}
void bfs(const long long& lim) {
  static long long u, mx;
  mx = 0;
  memset(f, 0x3f, sizeof f);
  q[0].push(1), f[1] = 0;
  for (long long c = 0; c <= mx; ++c) {
    while (!q[c].empty()) {
      u = q[c].front();
      q[c].pop();
      if (f[u] < c) continue;
      for (long long i = head[u], v; i; i = edge[i].nxt)
        if (f[(v = edge[i].to)] > dis[u] - dis[v] + edge[i].val + f[u]) {
          f[v] = dis[u] - dis[v] + edge[i].val + f[u];
          if (f[v] <= lim && f[v] < n - 1) q[f[v]].push(v), mx = max(mx, f[v]);
        }
    }
  }
}
signed main(void) {
  long long q;
  read(n), read(m), read(q);
  for (long long i = 1, u, v, w; i <= m; ++i) {
    read(u), read(v), read(w);
    edge[++eidx] = (Edge){head[u], v, w};
    head[u] = eidx;
  }
  dij();
  long long opt, x, y;
  while (q--) {
    read(opt), read(x);
    if (opt == 1)
      printf(dis[x] == INF ? "-1\n" : "%lld\n", dis[x]);
    else {
      for (long long i = 1; i <= x; ++i) {
        read(y);
        ++edge[y].val;
      }
      bfs(x);
      for (long long i = 1; i <= n; ++i) dis[i] = min(INF, dis[i] + f[i]);
    }
  }
  return 0;
}
