結果
| 問題 |
No.235 めぐるはめぐる (5)
|
| コンテスト | |
| ユーザー |
sune232002
|
| 提出日時 | 2015-06-26 23:35:58 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 1,428 ms / 10,000 ms |
| コード長 | 12,238 bytes |
| コンパイル時間 | 2,417 ms |
| コンパイル使用メモリ | 192,440 KB |
| 実行使用メモリ | 60,260 KB |
| 最終ジャッジ日時 | 2024-07-07 18:34:53 |
| 合計ジャッジ時間 | 8,371 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 3 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
#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 FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();++i)
#define ALL(c) (c).begin(), (c).end()
#define valid(y,x,h,w) (0<=y&&y<h&&0<=x&&x<w)
#define tpl(...) make_tuple(__VA_ARGS__)
const int INF = 0x3f3f3f3f;
const double EPS = 1e-8;
const double PI = acos(-1);
const int dy[] = {-1,0,1,0};
const int dx[] = {0,1,0,-1};
typedef long long ll;
typedef pair<int,int> pii;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<typename Ch,typename Tr,typename C,typename=decltype(begin(C()))>basic_ostream<Ch,Tr>& operator<<(basic_ostream<Ch,Tr>&os,
const C& c){os<<'[';for(auto i=begin(c);i!=end(c);++i)os<<(i==begin(c)?"":" ")<<*i;return os<<']';}
template<class S,class T>ostream&operator<<(ostream &o,const pair<S,T>&t){return o<<'('<<t.first<<','<<t.second<<')';}
template<int N,class Tp>void output(ostream&,const Tp&){}
template<int N,class Tp,class,class ...Ts>void output(ostream &o,const Tp&t){if(N)o<<',';o<<get<N>(t);output<N+1,Tp,Ts...>(o,t);}
template<class ...Ts>ostream&operator<<(ostream&o,const tuple<Ts...>&t){o<<'(';output<0,tuple<Ts...>,Ts...>(o,t);return o<<')';}
template<class T>void output(T t,char z=10){if(t<0)t=-t,putchar(45);int c[20];
int k=0;while(t)c[k++]=t%10,t/=10;for(k||(c[k++]=0);k;)putchar(c[--k]^48);putchar(z);}
template<class T>void outputs(T t){output(t);}
template<class S,class ...T>void outputs(S a,T...t){output(a,32);outputs(t...);}
template<class T>void output(T *a,int n){REP(i,n)cout<<a[i]<<(i!=n-1?',':'\n');}
template<class T>void output(T *a,int n,int m){REP(i,n)output(a[i],m);}
template<class T>bool input(T &t){int n=1,c;for(t=0;!isdigit(c=getchar())&&~c&&c-45;);
if(!~c)return 0;for(c-45&&(n=0,t=c^48);isdigit(c=getchar());)t=10*t+c-48;t=n?-t:t;return 1;}
template<class S,class ...T>bool input(S&a,T&...t){input(a);return input(t...);}
template<class T>bool inputs(T *a, int n) { REP(i,n) if(!input(a[i])) return 0; return 1;}
#define sz(c) ((int)(c).size())
#define ten(x) ((int)1e##x)
#define tenll(x) ((ll)1e##x)
class LCA {
public:
const vector<vector<int>>& e;
int V, logV;
vector<int> depth;
vector<vector<int> > parent;
LCA(const vector<vector<int>>& e) : e(e) {
this->V = sz(e);
logV = 0;
while (V >= (1 << logV)) logV++;
this->depth = vector<int>(V);
this->parent = vector<vector<int> >(logV, vector<int>(V));
dfs(0, -1, 0);
build();
}
void dfs(int v, int par, int d) {
depth[v] = d;
parent[0][v] = par;
for (auto to : e[v]) {
if (par == to) continue;
dfs(to, v, d + 1);
}
}
void build() {
for (int k = 0; k + 1 < logV; k++) {
for (int v = 0; v < V; v++) {
if (parent[k][v] < 0) parent[k + 1][v] = -1;
else parent[k + 1][v] = parent[k][parent[k][v]];
}
}
}
int query(int u, int v) {
if (depth[u] > depth[v]) swap(u, v);
for (int k = 0; k < logV; k++) {
if ((depth[v] - depth[u]) >> k & 1)
v = parent[k][v];
}
if (u == v) return u;
for (int k = logV - 1; k >= 0; k--) {
if (parent[k][u] != parent[k][v]) {
u = parent[k][u];
v = parent[k][v];
}
}
return parent[0][u];
}
};
template<int MOD>
struct ModInt {
int x;
ModInt() : x(0) {}
ModInt(ll s) { if ((x = s % MOD) < 0) x += MOD; }
ModInt operator+=(ModInt rhs) { if ((x+=rhs.x) >= MOD) x -= MOD; return *this; }
ModInt operator-=(ModInt rhs) { if ((x-=rhs.x) < 0) x += MOD; return *this; }
ModInt operator*=(ModInt rhs) { x = (ll)x*rhs.x % MOD; return *this; }
ModInt operator+(ModInt rhs) const { return ModInt(*this) += rhs; }
ModInt operator-(ModInt rhs) const { return ModInt(*this) -= rhs; }
ModInt operator*(ModInt rhs) const { return ModInt(*this) *= rhs; }
ModInt operator/=(ModInt rhs) {
static const ll inv2 = ModInt(2).inv().x; // 2で割るのは特別に保存してみる
ll i = (rhs.x == 2 ? inv2 : rhs.inv().x);
x = x*i%MOD; return *this;
}
ModInt operator/(ModInt rhs) const { return ModInt(*this) /= rhs; }
ModInt inv() { return pow(MOD-2); }
ModInt pow(ll n) const {
ModInt r = 1, t = x;
for (;n;n>>=1,t*=t) if (n&1) r *= t;
return r;
}
static ModInt strnum(const string &n) {ModInt a = 0; for (char c:n) a = a*10+c-'0'; return a;}
friend ostream& operator<<(ostream &os, const ModInt rhs){ return os << rhs.x; }
};
typedef ModInt<int(1e9+7)> mint;
struct Data {
mint csum;
mint val;
void init(int l, int s, int c) { // 末端ノードの初期化
val = s;
csum = c;
}
void change(mint v) { // ノードの値を変える
val += v;
}
void combine(const Data &l, const Data &r) { // 区間の統合
val = l.val + r.val;
csum = l.csum + r.csum;
}
string str() {
stringstream ss;
ss << val;
return ss.str();
}
};
struct Param {
mint z;
Param() {init();}
void init() {
z = 0;
}
void update(const Param &pp) {
// pp : 親のParam
// 今のthisにさらにppが適用された場合にthisがどうなるか
z += pp.z;
}
void update(int _z, int l, int r) {
z += _z;
}
void apply(Data &d, int l, int r) const {
// 区間に関するクエリに答えなければならないときは
// ここの適用を効率的にできるかが鍵
mint v = d.csum * z;
d.change(v);
}
};
struct SegTree {
int l,r; // 区間の範囲
int mid;
SegTree *cl, *cr;
Param param;
Data d;
SegTree(int l, int r, const vector<int> &s, const vector<int> &c) : l(l), r(r) {
mid = (l+r)>>1;
if (l+1 == r) {
d.init(l,s[l],c[l]);
} else {
cl = new SegTree(l,mid,s,c);
cr = new SegTree(mid,r,s,c);
d.combine(cl->d,cr->d);
}
}
void change(int k, int v) {
if (l+1 == r) {
d.change(v);
} else {
down();
if (k < mid) cl->change(k,v);
else cr->change(k,v);
d.combine(cl->d,cr->d);
}
}
Data query(int L, int R) {
if (L<=l && r<=R) return d;
down();
if (R<=mid) return cl->query(L,R);
if (L>=mid) return cr->query(L,R);
Data res;
res.combine(cl->query(L,R), cr->query(L,R));
return res;
}
void down() {
cl->update(param);
cr->update(param);
cl->param.update(param);
cr->param.update(param);
param.init();
}
void update(const Param &par) {
par.apply(d, l, r);
}
void apply(int L, int R, int z) {
if (L<=l && r<=R) {
param.update(z,L,R);
// ここでは今回分のみ自分に適用する必要がある.
Param par;
par.update(z,L,R);
par.apply(d,l,r);
return;
}
down();
if (L<mid) cl->apply(L,R,z);
if (R>mid) cr->apply(L,R,z);
d.combine(cl->d,cr->d);
}
void print(bool f = 1) {
if (l+1 == r) {
cout << d.str() << " ";
return;
}
down();
cl->print(0);
cr->print(0);
if (f) cout << endl;
}
};
class RangeTree {
public:
int n;
vector<vector<int>> dat;
RangeTree(vector<int>& a) {
n = 1;
while (n < sz(a)) n <<= 1;
dat.resize(2 * n - 1);
REP(i, n) {
int k = n - 1 + i;
if (i < sz(a)) dat[k].push_back(a[i]);
else dat[k].push_back(ten(8));
}
for (int i = n - 2; i >= 0; i--) {
dat[i].resize(sz(dat[2 * i + 1]) + sz(dat[2 * i + 2]));
merge(dat[2 * i + 1].begin(), dat[2 * i + 1].end(), dat[2 * i + 2].begin(), dat[2 * i + 2].end(), dat[i].begin());
}
}
int query(int l, int r, int val) {
return query(l, r, val, 0, 0, n);
}
int query(int l, int r, int val, int k, int a, int b) {
if (r <= a || b <= l) return 0;
if (l <= a && b <= r) {
return lower_bound(dat[k].begin(), dat[k].end(), val + 1) - dat[k].begin();
}
return query(l, r, val, 2 * k + 1, a, (a + b) / 2) + query(l, r, val, 2 * k + 2, (a + b) / 2, b);
}
};
//heavy-light decomposition
class HL_decomposition {
public:
const vector<vector<int>>& e;
const int n;
vector<int> par, depth, ord; //親,深さ、トポロジカルソート
vector<int> cluster; //decompositionした結果どのクラスタに属するか
vector<vector<int> > pathes; //各クラスタの、上から下へのパス
vector<int> path_idx; // path_idx[v] = 上記パスでのindex
void init(int v) {
depth.resize(n, 0);
par.resize(n, 0);
ord.resize(n, 0);
depth[v] = 0;
par[v] = -1;
ord[0] = v; //ordをキューとして使い、bfsする
for (int p = 0, r = 1; p < r; p++) {
int cur = ord[p];
for (int nv : e[cur]) {
if (nv == par[cur]) continue;
ord[r++] = nv;
par[nv] = cur;
depth[nv] = depth[cur] + 1;
}
}
}
void decomposition() {
vector<int> subtree_size(n, 1);
for (int i = n - 1; i > 0; i--) subtree_size[par[ord[i]]] += subtree_size[ord[i]];
cluster.resize(n, -1);
int cluster_type = 0;
REP(i, n) {
int u = ord[i];
if (cluster[u] == -1) cluster[u] = cluster_type++;
int max_subsize = -1, selected = -1;
for (int v : e[u]) {
if (par[u] != v && max_subsize < subtree_size[v]) {
max_subsize = subtree_size[v];
selected = v;
}
}
if (selected != -1) cluster[selected] = cluster[u];
}
}
void enum_pathes() {
int cluster_num = 0;
vector<int> rp(n);
REP(i, n) {
rp[cluster[i]]++;
cluster_num = max(cluster_num, cluster[i]);
}
cluster_num++;
pathes.resize(cluster_num);
REP(i, cluster_num) pathes[i].resize(rp[i]);
for (int i = n - 1; i >= 0; i--) {
int u = ord[i];
pathes[cluster[u]][--rp[cluster[u]]] = u;
}
}
void set_path_idx() {
path_idx.resize(n);
for (const vector<int>& path : pathes) {
REP(i, sz(path)) path_idx[path[i]] = i;
}
}
public:
HL_decomposition(const vector<vector<int>>& e) : e(e), n(sz(e)) {
init(0);
decomposition();
enum_pathes();
set_path_idx();
}
};
// exsample of how to use
class tree_query {
LCA* lca;
HL_decomposition *hl;
vector<SegTree*> rts;
int mx;
public:
tree_query(vector<vector<int>>& e, vector<int>& s, vector<int>& c) {
lca = new LCA(e);
hl = new HL_decomposition(e);
rts.resize(sz(hl->pathes));
REP(i, sz(rts)) {
vector<int> cs, ss;
for (int v : hl->pathes[i]) {
ss.push_back(s[v]);
cs.push_back(c[v]);
}
rts[i] = new SegTree(0, cs.size(), ss, cs);
}
}
void update(int v, int z) {
while (v != -1) {
rts[hl->cluster[v]]->apply(0, hl->path_idx[v] + 1, z);
v = hl->par[hl->pathes[hl->cluster[v]][0]];
}
}
void update(int u, int v, int z) {
int p = lca->query(u, v);
update(u,z);
update(v,z);
update(p,-z);
if (lca->parent[0][p] != -1)
update(lca->parent[0][p],-z);
}
mint count(int v) {
mint ret = 0;
while (v != -1) {
ret += rts[hl->cluster[v]]->query(0, hl->path_idx[v] + 1).val;
v = hl->par[hl->pathes[hl->cluster[v]][0]];
}
return ret;
}
mint query(int u, int v) {
int p = lca->query(u, v);
mint a1 = count(u);
mint a2 = count(v);
mint a3 = count(p);
mint a4 = lca->parent[0][p] != -1 ? count(lca->parent[0][p]) : 0;
mint cnt = a1 + a2 - a3 - a4;
return cnt;
}
~tree_query() {
delete lca;
delete hl;
REP(i, sz(rts)) delete rts[i];
}
};
int main() {
int n; cin >> n;
vector<int> s(n), c(n);
vector<vector<int>> e(n);
REP(i, n) cin >> s[i];
REP(i, n) cin >> c[i];
REP(i, n-1) {
int a, b; cin >> a >> b;
a--; b--;
e[a].push_back(b);
e[b].push_back(a);
}
tree_query tq(e, s, c);
int q;
cin >> q;
REP(i, q) {
int t;
input(t);
if (t == 0) {
int x, y, z;
input(x,y,z);
x--;y--;
tq.update(x, y, z);
} else {
int x, y;
input(x,y);
x--;y--;
mint res = tq.query(x, y);
output(res.x);
}
}
}
sune232002