#include <bits/stdc++.h>
using namespace std;
char ch;
int read() {
  int n = 0, p = 1;
  for (ch = getchar(); ch < '0' || ch > '9'; ch = getchar())
    if (ch == '-') p = -1;
  for (; '0' <= ch && ch <= '9'; ch = getchar()) n = n * 10 + ch - '0';
  return n * p;
}
const int N = 1e5 + 5;
const long long INF = 1e16;
int n, m, BB[N];
long long B[N][3];
struct node {
  int x;
  long long d;
  friend bool operator<(node a, node b) { return a.d > b.d; }
};
priority_queue<node> pq;
queue<int> q[N];
long long dis[N], f[N];
int main() {
  n = read(), m = read();
  int Q = read();
  for (int i = 1; i <= m; ++i) {
    int x = read(), y = read(), z = read();
    B[i][1] = y, B[i][0] = BB[x], B[i][2] = z, BB[x] = i;
  }
  for (int i = 2; i <= n; ++i) dis[i] = INF;
  for (pq.push((node){1, dis[1] = 0}); !pq.empty();) {
    node now = pq.top();
    pq.pop();
    int u = now.x;
    if (now.d > dis[u]) continue;
    for (int i = BB[u], v = B[BB[u]][1]; i; v = B[i = B[i][0]][1])
      if (dis[u] + B[i][2] < dis[v])
        pq.push((node){v, dis[v] = dis[u] + B[i][2]});
  }
  while (Q--) {
    int tp = read();
    if (tp == 1) {
      int x = read();
      if (dis[x] >= INF)
        puts("-1");
      else
        printf("%I64d\n", dis[x]);
    } else {
      int k = read();
      for (int i = 1; i <= k; ++i) ++B[read()][2];
      k = ((k) < (n - 1) ? (k) : (n - 1));
      for (int i = 2; i <= n; ++i) f[i] = n + 1;
      q[f[1] = 0].push(1);
      for (int h = 0; h <= k; ++h)
        while (!q[h].empty()) {
          int u = q[h].front();
          q[h].pop();
          if (h > f[u]) continue;
          for (int i = BB[u], v = B[BB[u]][1]; i; v = B[i = B[i][0]][1])
            if (h + dis[u] + B[i][2] - dis[v] < f[v]) {
              f[v] = h + dis[u] + B[i][2] - dis[v];
              if (f[v] <= k) q[f[v]].push(v);
            }
        }
      for (int i = 2; i <= n; ++i)
        dis[i] = ((INF) < (dis[i] + f[i]) ? (INF) : (dis[i] + f[i]));
    }
  }
  return 0;
}
