이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
// Copyright © 2022 Youngmin Park. All rights reserved.
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vi = vector<int>;
using pii = pair<int, int>;
using vpi = vector<pii>;
using pll = pair<ll, ll>;
using vl = vector<ll>;
using vpl = vector<pll>;
using ld = long double;
template <typename T, size_t SZ>
using ar = array<T, SZ>;
template <typename T>
using pqg = priority_queue<T, vector<T>, greater<T>>;
#define all(v) (v).begin(), (v).end()
#define pb push_back
#define sz(x) (int)(x).size()
#define fi first
#define se second
#define lb lower_bound
#define ub upper_bound
constexpr int INF = 1e9;
constexpr ll LINF = 1e18;
const ld PI = acos((ld)-1.0);
constexpr int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template <typename T>
constexpr bool ckmin(T &a, const T &b) { return b < a ? a = b, 1 : 0; }
template <typename T>
constexpr bool ckmax(T &a, const T &b) { return b > a ? a = b, 1 : 0; }
template <typename A, typename B>
ostream &operator<<(ostream &os, const pair<A, B> &p)
{
return os << '(' << p.first << ", " << p.second << ')';
}
template <typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type>
ostream &operator<<(ostream &os, const T_container &v)
{
os << '{';
string sep;
for (const T &x : v)
os << sep << x, sep = ", ";
return os << '}';
}
template <typename T>
ostream &operator<<(ostream &os, const deque<T> &v) {
os << vector<T>(all(v));
return os;
}
template <typename T, typename S, typename C>
ostream &operator<<(ostream &os, priority_queue<T, S, C> pq) {
vector<T> v;
while (sz(pq)) {
v.pb(pq.top());
pq.pop();
}
os << v;
return os;
}
void dbg_out()
{
cerr << "\033[0m" << endl;
}
template <typename Head, typename... Tail>
void dbg_out(Head H, Tail... T)
{
cerr << ' ' << H;
dbg_out(T...);
}
#ifdef LOCAL
#define dbg(...) cerr << "\033[1;35m(" << #__VA_ARGS__ << "):\033[33m", dbg_out(__VA_ARGS__)
#else
#define dbg(...) 42
#endif
inline namespace RecursiveLambda
{
template <typename Fun>
struct y_combinator_result
{
Fun fun_;
template <typename T>
explicit y_combinator_result(T &&fun) : fun_(forward<T>(fun)) {}
template <typename... Args>
decltype(auto) operator()(Args &&...args)
{
return fun_(ref(*this), forward<Args>(args)...);
}
};
template <typename Fun>
decltype(auto) y_combinator(Fun &&fun)
{
return y_combinator_result<decay_t<Fun>>(forward<Fun>(fun));
}
};
inline namespace Range {
class ForwardRange {
int src, dst;
public:
explicit constexpr ForwardRange(const int l, const int r) : src(l), dst(r) {}
explicit constexpr ForwardRange(const int n) : src(0), dst(n) {}
constexpr ForwardRange begin() const { return *this; }
constexpr monostate end() const { return {}; }
constexpr bool operator!=(monostate) const { return src < dst; }
constexpr void operator++() const {}
constexpr int operator*() { return src++; }
};
class BackwardRange {
int src, dst;
public:
explicit constexpr BackwardRange(const int l, const int r) : src(r), dst(l) {}
explicit constexpr BackwardRange(const int n) : src(n), dst(0) {}
constexpr BackwardRange begin() const { return *this; }
constexpr monostate end() const { return {}; }
constexpr bool operator!=(monostate) const { return src > dst; }
constexpr void operator++() const {}
constexpr int operator*() { return --src; }
};
using rep = ForwardRange;
using per = BackwardRange;
};
// From the USACO tutorial lol
struct DSU {
vector<int> e;
vector<int> mem;
vector<pair<pii, pii>> ev;
DSU(int N) { e = vector<int>(N, -1); }
// get representive component (uses path compression)
// To use rollback, disable path compression
int get(int x) { return e[x] < 0 ? x : get(e[x]); }
bool same_set(int a, int b) { return get(a) == get(b); }
int size(int x) { return -e[get(x)]; }
bool unite(int x, int y) { // union by size
x = get(x), y = get(y);
if (x == y) return false;
ev.pb({{x, e[x]}, {y, e[y]}});
if (e[x] > e[y]) swap(x, y);
e[x] += e[y]; e[y] = x;
return true;
}
void snapshot(){
mem.pb(sz(ev));
}
void rollback(){
if (mem.empty()) return;
int SZ = mem.back();
mem.pop_back();
while(sz(ev) != SZ){
pair<pii, pii> p = ev.back();
e[p.fi.fi] = p.fi.se;
e[p.se.fi] = p.se.se;
ev.pop_back();
}
}
};
struct Edge {
int u, v, w;
};
struct Query {
int type, id, w, time;
bool operator<(const Query& other) const {
return w > other.w;
}
};
ostream& operator<<(ostream& os, const Query& A) {
os << "(" << A.type << ", " << A.id << ", " << A.w << ", " << A.time << ")";
return os;
}
bitset<101000> isupd;
constexpr int SQ = 350, NN = 1e5 + 100;
int tmp[NN], ans[NN];
Query queries[SQ][SQ];
int cur[SQ];
Edge edges[NN];
void solve()
{
int n, m;
cin >> n >> m;
vector<vi> sorted_edges;
vi ind;
for (int i : rep(m)) {
int u, v, w;
cin >> u >> v >> w;
u--, v--;
edges[i] = {u, v, w};
ind.pb(w);
}
int q;
cin >> q;
for (int i : rep(q)) {
int t, id, w;
cin >> t >> id >> w;
id--;
queries[i / SQ][cur[i / SQ]++] = {t, id, w, i};
ind.pb(w);
}
sort(all(ind)), ind.resize(unique(all(ind)) - ind.begin());
sorted_edges.resize(sz(ind));
for (int i : rep(m)) {
auto &[u, v, w] = edges[i];
w = lb(all(ind), w) - ind.begin();
sorted_edges[w].pb(i);
}
for (int i : rep(SQ)) {
if (cur[i] == 0) break;
vector<Query> upd, calc;
DSU dsu(n);
for (int j : rep(cur[i])) {
auto &e = queries[i][j];
e.w = lb(all(ind), e.w) - ind.begin();
if (e.type == 1) {
upd.pb(e);
isupd[e.id] = 1;
}else{
calc.pb(e);
}
}
sort(all(calc));
int ptr = sz(ind);
for (auto &e : calc) {
while (ptr && ptr - 1 >= e.w) {
ptr--;
for (auto &id : sorted_edges[ptr]) {
if (!isupd[id] && edges[id].w == ptr) {
dsu.unite(edges[id].u, edges[id].v);
}
}
}
for (auto &f : upd) {
tmp[f.id] = -1;
}
for (auto &f : upd) {
if (f.time > e.time) continue;
tmp[f.id] = f.w;
}
dsu.snapshot();
for (auto &f : upd) {
if (f.time < e.time && tmp[f.id] >= e.w) {
dsu.unite(edges[f.id].u, edges[f.id].v);
}else if (tmp[f.id] == -1 && edges[f.id].w >= e.w) {
dsu.unite(edges[f.id].u, edges[f.id].v);
}
}
ans[e.time] = dsu.size(e.id);
dsu.rollback();
}
for (auto &e : upd) isupd[e.id] = 0, edges[e.id].w = e.w, sorted_edges[e.w].pb(e.id);
}
for (auto &e : ans) {
if (e) cout << e << '\n';
}
}
int main()
{
cin.tie(0)->sync_with_stdio(0);
cin.exceptions(cin.failbit);
int testcase = 1;
// cin >> testcase;
while (testcase--)
{
solve();
}
#ifdef LOCAL
cerr << "Time elapsed: " << 1.0 * (double)clock() / CLOCKS_PER_SEC << " s.\n";
#endif
}
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