結果
| 問題 | No.900 aδδitivee |
| コンテスト | |
| ユーザー |
detteiuu
|
| 提出日時 | 2026-01-27 02:09:02 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 171 ms / 2,000 ms |
| コード長 | 5,954 bytes |
| 記録 | |
| コンパイル時間 | 6,742 ms |
| コンパイル使用メモリ | 396,776 KB |
| 実行使用メモリ | 35,472 KB |
| 最終ジャッジ日時 | 2026-01-27 02:09:17 |
| 合計ジャッジ時間 | 11,598 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 27 |
ソースコード
#ifndef ONLINE_JUDGE
#define _GLIBCXX_DEBUG
#endif
#include <bits/stdc++.h>
using namespace std;
#define pass (void)0
#define INF (1<<30)-1
#define INFLL (1LL<<60)-1
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repr(i, n) for (int i = (int)(n) - 1; i >= 0; i--)
#define rep2(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
#define repr2(i, a, b) for (int i = (int)(b) - 1; i >= (int)(a); i--)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((int)(x).size())
#define YesNo(cond) cout << ((cond) ? "Yes\n" : "No\n")
#define YESNO(cond) cout << ((cond) ? "YES\n" : "NO\n")
using ll = long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
using vi = vector<int>;
using vl = vector<ll>;
using vvi = vector<vi>;
using vvl = vector<vl>;
template <typename T> void print(const T& value) { cout << value << "\n"; }
template <typename T> void print(const vector<T>& vec) { for (auto& v : vec) cout << v << " "; cout << "\n"; }
template <typename T> void input(vector<T>& vec) { for (auto& v : vec) cin >> v; };
template <typename T> bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; } return false; }
template <typename T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } return false; }
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using vm = vector<mint>;
struct LCA {
int V;
int LOG;
vector<vector<int>> parent;
vector<int> depth;
vector<ll> d;
LCA(const vector<vector<pair<int, ll>>>& G, int root = 0) {
V = (int)G.size();
LOG = 1;
while ((1 << LOG) < V) LOG++;
parent.assign(LOG, vector<int>(V, -1));
depth.assign(V, -1);
d.assign(V, -1);
bfs(G, root);
for (int i = 0; i + 1 < LOG; i++) {
for (int v = 0; v < V; v++) {
if (parent[i][v] != -1) {
parent[i + 1][v] = parent[i][ parent[i][v] ];
}
}
}
}
void bfs(const vector<vector<pair<int, ll>>>& G, int root) {
queue<int> q;
depth[root] = 0;
d[root] = 0;
q.push(root);
while (!q.empty()) {
int u = q.front(); q.pop();
for (auto [v, w] : G[u]) {
if (depth[v] == -1) {
d[v] = d[u]+w;
depth[v] = depth[u] + 1;
parent[0][v] = u;
q.push(v);
}
}
}
}
int lca(int a, int b) const {
if (depth[a] < depth[b]) swap(a, b);
int diff = depth[a] - depth[b];
for (int i = 0; i < LOG; i++) {
if (diff & (1 << i)) {
a = parent[i][a];
}
}
if (a == b) return a;
for (int i = LOG - 1; i >= 0; i--) {
if (parent[i][a] != parent[i][b]) {
a = parent[i][a];
b = parent[i][b];
}
}
return parent[0][a];
}
ll dist(int a, int b) const {
int c = lca(a, b);
return d[a] + d[b] - 2 * d[c];
}
bool is_ancestor(int u, int v) const {
return lca(u, v) == u;
}
int kth_ancestor(int v, int k) const {
for (int i = 0; i < LOG; i++) {
if (k & (1 << i)) {
v = parent[i][v];
if (v == -1) break;
}
}
return v;
}
int jump(int u, int v) const {
if (u == v) return u;
int c = lca(u, v);
if (c == u) {
return kth_ancestor(v, dist(u, v) - 1);
} else {
return parent[0][u];
}
}
int jump_k(int u, int v, int k) const {
int d = dist(u, v);
if (d <= k) return v;
int c = lca(u, v);
int du = depth[u] - depth[c];
if (k <= du) {
return kth_ancestor(u, k);
} else {
return kth_ancestor(v, d - k);
}
}
bool on_path(int u, int v, int x) const {
return dist(u, x) + dist(x, v) == dist(u, v);
}
pair<int,int> create_path(int u, int v, int x) const {
if (on_path(u, v, x)) return {u, v};
if (on_path(u, x, v)) return {u, x};
if (on_path(v, x, u)) return {v, x};
return {-1, -1};
}
};
vi IN;
vi OUT;
vector<vector<pair<int, ll>>> G;
vi sign;
int dfs(int n, int time) {
IN[n] = time;
if (n != 0) sign.push_back(1);
for (auto [v, _] : G[n]) {
time = dfs(v, time+1);
}
OUT[n] = time;
if (n != 0) sign.push_back(-1);
return time+1;
}
struct Node {
ll value;
int sign;
};
Node op(Node left, Node right) {
return {left.value+right.value, left.sign+right.sign};
}
Node e() {
return {0, 0};
}
Node mapping(ll top, Node bottom) {
bottom.value += top*bottom.sign;
return bottom;
}
ll composition(ll top, ll bottom) {
return bottom+top;
}
ll id() {
return 0;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << fixed << setprecision(10);
int N;
cin >> N;
G.assign(N, vector<pair<int, ll>> ());
rep (_, N-1) {
int u, v;
ll w;
cin >> u >> v >> w;
G[u].push_back({v, w});
}
LCA lca(G);
IN.assign(N, -1);
OUT.assign(N, -1);
dfs(0, 0);
vector<Node> def;
rep (i, sz(sign)) {
def.push_back({0, sign[i]});
}
lazy_segtree<Node, op, e, ll, mapping, composition, id> seg(def);
int Q;
cin >> Q;
while (Q--) {
int q;
cin >> q;
if (q == 1) {
int a; ll x;
cin >> a >> x;
if (IN[a] == OUT[a]) continue;
seg.apply(IN[a], OUT[a], x);
} else {
int b;
cin >> b;
if (b != 0) {
print(lca.dist(0, b)+seg.prod(0, IN[b]).value);
} else {
print(0);
}
}
}
}
detteiuu