#include <bits/stdc++.h>
using namespace std;
const int N = 100000 + 100;
const long double pi = acos(-1.0);
inline int read() {
  int x = 0, f = 1;
  char ch = getchar();
  while ((ch < '0') || (ch > '9')) {
    if (ch == '-') f = -1;
    ch = getchar();
  }
  while ((ch >= '0') && (ch <= '9')) {
    x = x * 10 + (ch - '0');
    ch = getchar();
  }
  return x * f;
}
inline long long readll() {
  long long x = 0;
  int f = 1;
  char ch = getchar();
  while ((ch < '0') || (ch > '9')) {
    if (ch == '-') f = -1;
    ch = getchar();
  }
  while ((ch >= '0') && (ch <= '9')) {
    x = x * 10 + (ch - '0');
    ch = getchar();
  }
  return x * f;
}
struct node {
  int to, nxt, cost;
} sq[N << 1];
int all = 0, head[N];
void addedge(int u, int v, int w) {
  all++;
  sq[all].to = v;
  sq[all].nxt = head[u];
  sq[all].cost = w;
  head[u] = all;
}
struct hnode {
  int u;
  long long dis;
};
bool operator<(hnode p, hnode q) { return p.dis > q.dis; }
priority_queue<hnode> q;
long long dis[N];
bool vis[N];
int n, m;
void dij() {
  memset(dis, 0x3f, sizeof(dis));
  dis[1] = 0;
  q.push((hnode){1, 0});
  while (!q.empty()) {
    int u = q.top().u;
    q.pop();
    if (vis[u]) continue;
    vis[u] = 1;
    for (register int i = head[u], v = sq[i].to; i;
         i = sq[i].nxt, v = sq[i].to) {
      if (dis[v] > dis[u] + sq[i].cost) {
        dis[v] = dis[u] + sq[i].cost;
        if (!vis[v]) q.push((hnode){v, dis[v]});
      }
    }
  }
}
queue<int> q1[N];
long long d[N];
void bfs(int lim) {
  memset(d, 0x3f, sizeof(d));
  d[1] = 0;
  q1[0].push(1);
  int tp = 0;
  for (register int i = 0; i <= tp; i++) {
    while (!q1[i].empty()) {
      int u = q1[i].front();
      q1[i].pop();
      if (d[u] < i) continue;
      for (register int j = head[u], v = sq[j].to; j;
           j = sq[j].nxt, v = sq[j].to) {
        long long nowd = dis[u] - dis[v] + sq[j].cost;
        if (d[v] > d[u] + nowd) {
          d[v] = d[u] + nowd;
          if (d[v] <= lim) {
            q1[d[v]].push(v);
            tp = max((long long)tp, d[v]);
          }
        }
      }
    }
  }
}
int main() {
  n = read();
  m = read();
  int q = read();
  for (register int i = 1; i <= m; i++) {
    int u = read(), v = read(), w = read();
    addedge(u, v, w);
  }
  dij();
  while (q--) {
    int op = read();
    if (op == 1) {
      int u = read();
      if (dis[u] < 1e18)
        printf("%lld\n", dis[u]);
      else
        puts("-1");
    } else {
      int len = read();
      for (register int i = 1; i <= len; i++) {
        int id = read();
        sq[id].cost++;
      }
      bfs(min(n - 1, len));
      for (register int i = 1; i <= n; i++)
        if (dis[i] < 1e18) dis[i] += d[i];
    }
  }
  return 0;
}
