이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#define wiwihorz
#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC target("sse")
#pragma loop-opt(on)
#define rep(i, a, b) for(int i = a; i <= b; i ++)
#define rrep(i, a, b) for(int i = b; i >= a; i --)
#define all(x) x.begin(), x.end()
#define ceil(a, b) ((a + b - 1) / (b))
#define int long long int
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())
#define INF 1000000000000000000
#define MOD 1000000007
#define eps (1e-9)
using namespace std;
#ifdef wiwihorz
#define print(a...)cerr<<"Line "<<__LINE__<<":",kout("["+string(#a)+"] = ", a)
void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L) == R], ++L; }
void kout() { cerr << endl; }
template<class T1,class ... T2>void kout(T1 a,T2 ... e){cerr<<a<<" ",kout(e...);}
#else
#define print(...) 0
#define vprint(...) 0
#endif
#define x first
#define y second
namespace solver {
int n, m, q, sz = 300, bk, cnt;
vector<pair<pii, int>> v;
vector<vector<int>> mp;
vector<int> ans, x, y, cost, tp, s;
vector<int> ord, vis, par, rk, bg, go;
void init_(int _n, int _m) {
n = _n, m = _m;
x.assign(m + 1, 0);
y.assign(m + 1, 0);
cost.assign(m + 1, 0);
ord.assign(m, 0);
iota(all(ord), 1);
mp.assign(n + 1, vector<int>());
go.assign(n + 1, 0);
}
void init2_(int _q) {
q = _q;
bk = ceil(q, sz);
ans.assign(q + 1, 0);
v.assign(q + 1, {{0, 0}, 0});
}
int pos(int x) {
if(par[par[x]] == par[x]) return par[x];
else return par[x] = pos(par[x]);
}
void unite(int a, int b) {
int aa = pos(a);
int bb = pos(b);
if(aa == bb) return;
if(rk[bb] > rk[aa]) swap(aa, bb);
rk[aa] += (rk[aa] == rk[bb]);
par[bb] = aa;
bg[aa] += bg[bb];
}
void build() {
vis.assign(m + 1, 0);
rk.assign(n + 1, 0);
par.assign(n + 1, 0);
bg.assign(n + 1, 1);
iota(all(par), 0);
s.clear();
tp.clear();
}
void dfs(int x) {
cnt += bg[pos(x)], go[pos(x)] = 1;
for(auto i : mp[x]) {
if(go[pos(i)]) continue;
dfs(pos(i));
}
}
void solve() {
sort(all(ord), [&](int a, int b) {
return cost[a] > cost[b];
});
rep(i, 1, bk) {
build();
int l = (i - 1) * sz + 1;
int r = min(q, i * sz);
rep(j, l, r) {
if(v[j].y == 1) {
vis[v[j].x.x] = 1;
tp.push_back(v[j].x.x);
}
else s.push_back(j);
}
sort(all(s), [&](int a, int b) {
return v[a].x.y > v[b].x.y;
});
int ii = 0;
vector<pii> ret;
sort(all(tp));
tp.resize(unique(all(tp)) - tp.begin());
for(auto j : s) {
ret.clear();
int id = v[j].x.x, val = v[j].x.y;
rep(k, l, j - 1) if(v[k].y == 1) {
int a = v[k].x.x, b = v[k].x.y;
ret.push_back({a, cost[a]});
cost[a] = b;
}
while(ii < m && (vis[ord[ii]]
|| cost[ord[ii]] >= val)) {
if(!vis[ord[ii]]) {
int cur = ord[ii];
unite(x[cur], y[cur]);
}
ii++;
}
for(auto k : tp) if(cost[k] >= val) {
int l = pos(x[k]), r = pos(y[k]);
go[l] = go[r] = 0;
mp[l].push_back(r);
mp[r].push_back(l);
}
cnt = 0, dfs(pos(id));
ans[j] = cnt;
for(auto k : tp) {
int l = pos(x[k]), r = pos(y[k]);
go[l] = go[r] = 0;
mp[l].clear();
mp[r].clear();
}
reverse(all(ret));
for(auto k : ret) cost[k.x] = k.y;
}
rep(j, l, r) if(v[j].y == 1) {
cost[v[j].x.x] = v[j].x.y;
}
vector<int> L, R(m, 0);
for(auto j : ord) if(!vis[j]) L.push_back(j);
auto cmp = [&](int a, int b) {
return cost[a] > cost[b];
};
sort(all(tp), cmp);
merge(tp.begin(), tp.end(), L.begin(), L.end(), R.begin(), cmp);
ord = R;
}
rep(i, 1, q) if(v[i].y == 2) {
cout << ans[i] << "\n";
}
}
};
using namespace solver;
signed main() {
ios::sync_with_stdio(false), cin.tie(0);
int n, m;
cin >> n >> m;
init_(n, m);
rep(i, 1, m) cin >> x[i] >> y[i] >> cost[i];
int q; cin >> q;
init2_(q);
rep(i, 1, q) cin >> v[i].y >> v[i].x.x >> v[i].x.y;
solve();
return 0;
}
컴파일 시 표준 에러 (stderr) 메시지
bridges.cpp:5: warning: ignoring '#pragma loop ' [-Wunknown-pragmas]
5 | #pragma loop-opt(on)
|
bridges.cpp:20:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
20 | void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L) == R], ++L; }
| ^~~~
bridges.cpp:20:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
20 | void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L) == R], ++L; }
| ^~~~
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