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| #include <bits/stdc++.h>
#define x first
#define y second
#define y1 Y1
#define y2 Y2
#define mp make_pair
#define pb push_back
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
template <typename T> inline int Chkmax (T &a, T b) { return a < b ? a = b, 1 : 0; }
template <typename T> inline int Chkmin (T &a, T b) { return a > b ? a = b, 1 : 0; }
inline void proc_status()
{
ifstream t ("/proc/self/status");
cerr << string (istreambuf_iterator <char> (t), istreambuf_iterator <char> ()) <<endl;
}
template <typename T> T read ()
{
T sum = 0, fl = 1; char ch = getchar();
for (; !isdigit(ch); ch = getchar()) if (ch == '-') fl = -1;
for (; isdigit(ch); ch = getchar()) sum = (sum << 3) + (sum << 1) + ch - '0';
return sum * fl;
}
const int Maxn = 1000 + 100, Maxm = 100000 + 100;
int N, M, Q;
vector <int> Ans;
struct node
{
int x, y, z, op;
}Edge[Maxm], Query[Maxm];
map <pii, int> S;
struct tree
{
int fa, ch[2], rev, max, val;
}Tree[Maxm << 3];
namespace LCT
{
#define ls (Tree[x].ch[0])
#define rs (Tree[x].ch[1])
int Stack[Maxm], top;
inline int is_root (int x) { return Tree[Tree[x].fa].ch[0] != x && Tree[Tree[x].fa].ch[1] != x; }
inline int judge (int x) { return Tree[Tree[x].fa].ch[1] == x; }
inline void connect (int x, int f, int dir) { Tree[x].fa = f, Tree[f].ch[dir] = x; }
inline void push_up (int x)
{
Tree[x].max = Tree[x].val;
if (Edge[Tree[ls].max].z > Edge[Tree[x].max].z) Tree[x].max = Tree[ls].max;
if (Edge[Tree[rs].max].z > Edge[Tree[x].max].z) Tree[x].max = Tree[rs].max;
}
inline void push_down (int x) { if (Tree[x].rev) swap(ls, rs), Tree[ls].rev ^= 1, Tree[rs].rev ^= 1, Tree[x].rev = 0; }
inline void rotate (int x)
{
int f = Tree[x].fa, anc = Tree[f].fa, dirx = judge(x), dirf = judge(f);
if (!is_root(f)) Tree[anc].ch[dirf] = x; Tree[x].fa = anc;
connect (Tree[x].ch[dirx ^ 1], f, dirx);
connect (f, x, dirx ^ 1);
push_up(f), push_up(x);
}
inline void splay (int x)
{
Stack[++top] = x; for (int y = x; !is_root(y); y = Tree[y].fa) Stack[++top] = Tree[y].fa;
while (top) push_down (Stack[top--]);
for (; !is_root(x); rotate (x)) if (!is_root(Tree[x].fa)) rotate (judge(x) == judge(Tree[x].fa) ? Tree[x].fa: x);
}
inline void access (int x) { for (int y = 0; x; y = x, x = Tree[x].fa) splay(x), rs = y, push_up(x); }
inline void make_root (int x) { access (x), splay (x), Tree[x].rev ^= 1; }
inline void split (int x, int y) { make_root(x), access(y), splay(y); }
inline void link (int x, int y) { make_root(x); Tree[x].fa = y; }
inline void cut (int x, int y) { split(x, y); Tree[x].fa = Tree[y].ch[0] = 0; push_up(y); }
inline int query (int x, int y) { split(x, y); return Tree[y].max; }
inline void update (int x, int y)
{
int id = query(x, y), pos = S[mp(x, y)];
if (Edge[pos].z < Edge[id].z)
{
cut (Edge[id].x, id + N), cut (id + N, Edge[id].y);
link (Edge[pos].x, pos + N), link (pos + N, Edge[pos].y);
}
}
}
namespace DSU
{
int fa[Maxn];
inline void init (int maxn) { for (int i = 1; i <= maxn; ++i) fa[i] = i; }
inline int find (int x) { return fa[x] == x ? x : fa[x] = find(fa[x]); }
inline void link (int x, int y) { fa[find(x)] = find(y); }
}
inline void Solve ()
{
DSU :: init (N);
for (int i = 1; i <= M; ++i)
if (!Edge[i].op)
{
if (DSU :: find(Edge[i].x) != DSU :: find(Edge[i].y))
{
LCT :: link (Edge[i].x, i + N), LCT :: link (i + N, Edge[i].y);
DSU :: link (Edge[i].x, Edge[i].y);
}
else LCT :: update (Edge[i].x, Edge[i].y);
}
for (int i = Q; i >= 1; --i)
{
if (Query[i].op == 1) Ans.pb(Edge[LCT :: query (Query[i].x, Query[i].y)].z);
else LCT :: update (Query[i].x, Query[i].y);
}
for (int i = Ans.size() - 1; i >= 0; --i) printf("%d\n", Ans[i]);
}
inline int cmp (node a, node b) { return a.z < b.z; }
inline void Input ()
{
N = read<int>(), M = read<int>(), Q = read<int>();
for (int i = 1; i <= M; ++i)
{
Edge[i].x = read<int>(), Edge[i].y = read<int>(), Edge[i].z = read<int>();
S[mp(Edge[i].x, Edge[i].y)] = S[mp(Edge[i].y, Edge[i].x)] = i;
Tree[N + i].val = Tree[N + i].max = i;
}
for (int i = 1; i <= Q; ++i)
{
Query[i].op = read<int>(), Query[i].x = read<int>(), Query[i].y = read<int>();
if (Query[i].op == 2) Edge[S[mp(Query[i].x, Query[i].y)]].op = 1;
}
}
int main()
{
#ifndef ONLINE_JUDGE
freopen("A.in", "r", stdin);
freopen("A.out", "w", stdout);
#endif
Input();
Solve();
return 0;
}
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