#include <bits/stdc++.h>
namespace ztd {
using namespace std;
template <typename T>
inline T read(T &t) {
  t = 0;
  short f = 1;
  char ch = getchar();
  double d = 0.1;
  while (ch < '0' || ch > '9') {
    if (ch == '-') f = -f;
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9') t = t * 10 + ch - '0', ch = getchar();
  if (ch == '.') {
    ch = getchar();
    while (ch <= '9' && ch >= '0') t += d * (ch ^ 48), d *= 0.1, ch = getchar();
  }
  t *= f;
  return t;
}
}  // namespace ztd
using namespace ztd;
const long long inf = 0x3f3f3f3f3f3f3f3f;
const int maxn = 1e5 + 7;
int n, m, Q, X[maxn], Y[maxn], W[maxn];
int last[maxn], Last[maxn], ecnt;
struct edge {
  int y, gg, w;
} e[maxn], g[maxn];
inline void addedge(int *last, edge *e, int x, int y, int w) {
  e[++ecnt].y = y;
  e[ecnt].w = w;
  e[ecnt].gg = last[x];
  last[x] = ecnt;
}
struct node {
  int x;
  long long val;
  bool operator<(const node &x) const { return val > x.val; }
};
long long dis[maxn];
bool vis[maxn];
priority_queue<node> q;
inline void Dijkstra(int s) {
  for (int i = 1; i <= n; ++i) dis[i] = inf;
  dis[s] = 0;
  q.push((node){s, 0});
  while (!q.empty()) {
    node now = q.top();
    q.pop();
    int x = now.x;
    if (vis[x]) continue;
    vis[x] = 1;
    for (int i = last[x], y; i; i = e[i].gg) {
      y = e[i].y;
      if (dis[y] > dis[x] + e[i].w) {
        dis[y] = dis[x] + e[i].w;
        if (!vis[y]) {
          q.push((node){y, dis[y]});
        }
      }
    }
  }
}
queue<int> v[maxn];
long long d[maxn];
void Dickstra(int c) {
  for (int i = 1; i <= n; ++i) d[i] = inf;
  d[1] = 0;
  v[0].push(1);
  long long mx = 0;
  for (int i = 0; i <= mx; ++i) {
    while (!v[i].empty()) {
      int x = v[i].front();
      v[i].pop();
      if (d[x] < i) continue;
      for (int i = last[x]; i; i = e[i].gg) {
        int y = e[i].y, w = dis[x] + e[i].w - dis[y];
        if (d[y] > d[x] + w) {
          d[y] = d[x] + w;
          if (d[y] <= min(c, n - 1)) {
            v[d[y]].push(y);
            mx = max(mx, d[y]);
          }
        }
      }
    }
  }
}
signed main() {
  read(n);
  read(m);
  read(Q);
  for (int i = 1, x, y, w; i <= m; ++i) {
    X[i] = read(x);
    Y[i] = read(y);
    W[i] = read(w);
    addedge(last, e, x, y, w);
  }
  Dijkstra(1);
  int opt, x;
  while (Q--) {
    read(opt);
    read(x);
    if (opt == 1)
      cout << (dis[x] == inf ? -1 : dis[x]) << '\n';
    else {
      for (int i = 1, u; i <= x; ++i) e[read(u)].w++;
      Dickstra(x);
      for (int i = 1; i <= n; ++i) dis[i] = min(1ll * inf, dis[i] + d[i]);
    }
  }
  return 0;
}
