結果
| 問題 |
No.899 γatheree
|
| コンテスト | |
| ユーザー |
ferin
|
| 提出日時 | 2019-10-05 15:06:10 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 7,091 bytes |
| コンパイル時間 | 2,450 ms |
| コンパイル使用メモリ | 188,872 KB |
| 実行使用メモリ | 35,216 KB |
| 最終ジャッジ日時 | 2024-10-05 23:17:00 |
| 合計ジャッジ時間 | 16,859 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 21 WA * 2 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
// #define int ll
using PII = pair<ll, ll>;
#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define ALL(x) x.begin(), x.end()
template<typename T> T &chmin(T &a, const T &b) { return a = min(a, b); }
template<typename T> T &chmax(T &a, const T &b) { return a = max(a, b); }
template<typename T> bool IN(T a, T b, T x) { return a<=x&&x<b; }
template<typename T> T ceil(T a, T b) { return a/b + !!(a%b); }
template<typename T> vector<T> make_v(size_t a) { return vector<T>(a); }
template<typename T,typename... Ts>
auto make_v(size_t a,Ts... ts) {
return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));
}
template<typename T,typename V> typename enable_if<is_class<T>::value==0>::type
fill_v(T &t, const V &v) { t=v; }
template<typename T,typename V> typename enable_if<is_class<T>::value!=0>::type
fill_v(T &t, const V &v ) { for(auto &e:t) fill_v(e,v); }
template<class S,class T>
ostream &operator <<(ostream& out,const pair<S,T>& a){
out<<'('<<a.first<<','<<a.second<<')'; return out;
}
template<class T>
ostream &operator <<(ostream& out,const vector<T>& a){
out<<'['; for(T i: a) {out<<i<<',';} out<<']'; return out;
}
int dx[] = {0, 1, 0, -1}, dy[] = {1, 0, -1, 0}; // DRUL
const int INF = 1<<30;
const ll LLINF = 1LL<<60;
const ll MOD = 1000000007;
struct bfsEulerTour {
ll n, maxd;
vector<ll> idx, tour;
vector<vector<ll>> g, p, l, r;
bfsEulerTour() {}
bfsEulerTour(ll n, ll d) : n(n), maxd(d), idx(n, -1), g(n), p(d+1, vector<ll>(n, -1)), l(d+1, vector<ll>(n, -1)), r(d+1, vector<ll>(n, -1)) {}
void add_edge(ll a, ll b) {
g[a].push_back(b);
g[b].push_back(a);
}
void build(ll root=0) {
queue<ll> que;
que.push(root);
idx[root] = tour.size();
p[0][root] = root;
l[0][root] = 0;
r[0][root] = 1;
tour.push_back(root);
while(que.size()) {
ll v = que.front(); que.pop();
for(auto to: g[v]) {
if(idx[to] != -1) continue;
que.push(to);
idx[to] = tour.size();
tour.push_back(to);
p[0][to] = to;
FOR(i, 1, maxd+1) p[i][to] = p[i-1][v];
REP(i, maxd+1) {
if(p[i][to] == -1) continue;
if(l[i][p[i][to]] == -1) l[i][p[i][to]] = idx[to];
r[i][p[i][to]] = idx[to]+1;
}
}
}
}
// 頂点vからの距離がd以下の頂点に対応する区間を列挙 O(d)
void for_each(ll v, ll d, function<void(ll,ll)> f) {
for(ll i=d; i>=0; --i) {
if(p[i][v] == -1) continue;
// 半開区間[l,r) を渡している
f(l[d-i][p[i][v]], r[d-i][p[i][v]]);
if(i!=d) f(l[d-1-i][p[i][v]], r[d-1-i][p[i][v]]);
}
}
};
template <typename Monoid>
struct lazysegtree {
using T = typename Monoid::T;
using E = typename Monoid::E;
int n, height;
vector<T> dat;
vector<E> lazy;
lazysegtree() {}
lazysegtree(int n_) {
n = 1, height = 0;
while(n < n_) { n *= 2; height++; }
dat.assign(n*2, Monoid::dt());
lazy.assign(n*2, Monoid::de());
}
void build(vector<T> v) {
REP(i, v.size()) dat[i+n] = v[i];
for(int i=n-1; i>0; --i) dat[i] = Monoid::f(dat[i*2], dat[i*2+1]);
}
inline T reflect(int k) { return lazy[k]==Monoid::de()?dat[k]:Monoid::g(dat[k], lazy[k]); }
inline void eval(int k) {
if(lazy[k] == Monoid::de()) return;
lazy[2*k] = Monoid::h(lazy[k*2], lazy[k]);
lazy[2*k+1] = Monoid::h(lazy[k*2+1], lazy[k]);
dat[k] = reflect(k);
lazy[k] = Monoid::de();
}
inline void thrust(int k) { for(int i=height;i;--i) eval(k>>i); }
inline void recalc(int k) { while(k>>=1) dat[k] = Monoid::f(reflect(k*2), reflect(k*2+1)); }
void update(int a, int b, E x) {
thrust(a+=n);
thrust(b+=n-1);
for(int l=a, r=b+1; l<r; l>>=1,r>>=1) {
if(l&1) lazy[l] = Monoid::h(lazy[l], x), ++l;
if(r&1) --r, lazy[r] = Monoid::h(lazy[r], x);
}
recalc(a);
recalc(b);
}
T query(int a, int b) {
thrust(a+=n);
thrust(b+=n-1);
T vl=Monoid::dt(), vr=Monoid::dt();
for(int l=a, r=b+1; l<r; l>>=1,r>>=1) {
if(l&1) vl=Monoid::f(vl, reflect(l++));
if(r&1) vr=Monoid::f(reflect(--r), vr);
}
return Monoid::f(vl, vr);
}
friend ostream &operator <<(ostream& out,const lazysegtree<Monoid>& seg) {
out << "---------------------" << endl;
int cnt = 1;
for(int i=1; i<=seg.n; i*=2) {
REP(j, i) {
out << "(" << seg.dat[cnt] << "," << seg.lazy[cnt] << ") ";
cnt++;
}
out << endl;
}
out << "---------------------" << endl;
return out;
}
};
struct node {
ll sum, max, min, len;
node() : sum(0), max(-LLINF), min(LLINF), len(0) {}
node(ll a, ll b, ll c, ll d) : sum(a), max(b), min(c), len(d) {}
};
struct linear_exp {
using T = node;
using E = PII;
static T dt() { return node(); }
static constexpr E de() { return PII(1, 0); }
static T f(const T &a, const T &b) {
node ret;
ret.sum = a.sum + b.sum;
ret.min = min(a.min, b.min);
ret.max = max(a.max, b.max);
ret.len = a.len + b.len;
return ret;
}
static T g(const T &a, const E &b) {
node ret;
ret.sum = b.first*a.sum+b.second*a.len;
ret.min = b.first*a.min+b.second;
ret.max = b.first*a.max+b.second;
ret.len = a.len;
return ret;
}
static E h(const E &a, const E &b) {
return PII(b.first*a.first, b.first*a.second+b.second);
}
};
signed main(void)
{
cin.tie(0);
ios::sync_with_stdio(false);
ll n;
cin >> n;
bfsEulerTour tour(n, 2);
REP(i, n-1) {
ll u, v;
cin >> u >> v;
tour.add_edge(u, v);
}
vector<ll> a(n);
REP(i, n) cin >> a[i];
tour.build();
// cerr << "tour:" << tour.tour << endl;
// cerr << "idx:" << tour.idx << endl;
// cerr << "p:" << endl;
// REP(i, 3) {
// cerr << tour.p[i] << endl;
// }
// cerr << tour.l[0] << endl;
// cerr << tour.r[0] << endl;
lazysegtree<linear_exp> seg(n);
seg.build(vector<node>(n, node(0, 0, 0, 1)));
REP(i, n) {
tour.for_each(i, 0, [&](ll u, ll v){
seg.update(u, v, PII(0, a[i]));
});
}
ll q;
cin >> q;
while(q--) {
ll x;
cin >> x;
ll ret = 0;
tour.for_each(x, 2, [&](ll u, ll v){
ret += seg.query(u, v).sum;
seg.update(u, v, PII(0, 0));
});
tour.for_each(x, 0, [&](ll u, ll v){
seg.update(u, v, PII(1, ret));
});
cout << ret << endl;
}
return 0;
}
ferin