結果

問題 No.899 γatheree
コンテスト
ユーザー tnakao0123
提出日時 2019-10-05 16:01:08
言語 C++11（廃止可能性あり）
(gcc 13.3.0)
結果
AC  
実行時間 342 ms / 2,000 ms
コード長 4,687 bytes
コンパイル時間 1,251 ms
コンパイル使用メモリ 104,092 KB
実行使用メモリ 16,792 KB
最終ジャッジ日時 2024-10-06 02:37:29
合計ジャッジ時間 9,111 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 23
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:126:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  126 |   scanf("%d", &n);
      |   ~~~~~^~~~~~~~~~
main.cpp:130:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  130 |     scanf("%d%d", &u, &v);
      |     ~~~~~^~~~~~~~~~~~~~~~
main.cpp:182:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  182 |     scanf("%d", &ai);
      |     ~~~~~^~~~~~~~~~~
main.cpp:188:8: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  188 |   scanf("%d", &qn);
      |   ~~~~~^~~~~~~~~~~
main.cpp:192:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  192 |     scanf("%d", &x);
      |     ~~~~~^~~~~~~~~~

ソースコード

diff # 

/* -*- coding: utf-8 -*-
 *
 * 899.cc:  No.899 粒atheree - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int MAX_N = 100000;
const int MAX_E2 = 1 << 18; // = 262144
const long long LINF = 1LL << 62;

/* typedef */

typedef long long ll;
typedef queue<int> qi;
typedef vector<int> vi;

template <typename T, const int MAX_E2>
struct SegTreeDly {
  int n, e2;
  T nodes[MAX_E2], dls[MAX_E2], undef;
  SegTreeDly() {}

  void init(int _n, T _undef) {
    n = _n; undef = _undef;
    for (e2 = 1; e2 < n; e2 <<= 1);
    fill(dls, dls + MAX_E2, undef);
  }

  T &get(int i) { return nodes[e2 - 1 + i]; }

  void set(int i, T v) { get(i) = v; }
  void setall() {
    for (int j = e2 - 2; j >= 0; j--)
      nodes[j] = nodes[j * 2 + 1] + nodes[j * 2 + 2];
  }

  void _update(int k, int l) {
    if (dls[k] != undef) {
      int k0 = k * 2 + 1, k1 = k0 + 1, hl = (l >> 1);
      nodes[k0] = dls[k] * hl; dls[k0] = dls[k];
      nodes[k1] = dls[k] * hl; dls[k1] = dls[k];
      dls[k] = undef;
    }
  }

  void set_range(int r0, int r1, T v, int k, int i0, int i1) {
    if (r1 <= i0 || i1 <= r0) return;
    if (r0 <= i0 && i1 <= r1) {
      nodes[k] = v * (i1 - i0);
      dls[k] = v;
      return;
    }

    _update(k, i1 - i0);

    int im = (i0 + i1) / 2;
    int k0 = k * 2 + 1, k1 = k0 + 1;
    set_range(r0, r1, v, k0, i0, im);
    set_range(r0, r1, v, k1, im, i1);
    nodes[k] = nodes[k0] + nodes[k1];
  }
  void set_range(int r0, int r1, T v) { set_range(r0, r1, v, 0, 0, e2); }

  T sum_range(int r0, int r1, int k, int i0, int i1) {
    if (r1 <= i0 || i1 <= r0) return 0;
    if (r0 <= i0 && i1 <= r1) return nodes[k];

    _update(k, i1 - i0);

    int im = (i0 + i1) / 2;
    T v0 = sum_range(r0, r1, k * 2 + 1, i0, im);
    T v1 = sum_range(r0, r1, k * 2 + 2, im, i1);
    return v0 + v1;
  }
  T sum_range(int r0, int r1) { return sum_range(r0, r1, 0, 0, e2); }
};

/* global variables */

vi nbrs[MAX_N];
int prts[MAX_N], rls[MAX_N][3], rrs[MAX_N][3], cns[MAX_N];
SegTreeDly<ll,MAX_E2> st;
int xls[10], xrs[10];

/* subroutines */

inline void setmin(int &a, int b) { if (a > b) a = b; }
inline void setmax(int &a, int b) { if (a < b) a = b; }

inline void addrange(int &pl, int &pr, int l, int r) {
  if (l >= 0) {
    if (pl < 0) pl = l, pr = r;
    else {
      setmin(pl, l);
      setmax(pr, r);
    }
  }
}

/* main */

int main() {
  int n;
  scanf("%d", &n);

  for (int i = 1; i < n; i++) {
    int u, v;
    scanf("%d%d", &u, &v);
    nbrs[u].push_back(v);
    nbrs[v].push_back(u);
  }

  memset(rls, -1, sizeof(rls));
  memset(rrs, -1, sizeof(rrs));
  prts[0] = -1;

  qi q;
  q.push(0);

  for (int k = 0; ! q.empty(); k++) {
    int u = q.front(); q.pop();

    rls[u][0] = k, rrs[u][0] = k + 1;

    int &up = prts[u];
    vi &nbru = nbrs[u];
    for (vi::iterator vit = nbru.begin(); vit != nbru.end(); vit++) {
      int &v = *vit;
      if (v != up) {
	prts[v] = u;
	cns[u]++;
	q.push(v);
      }
    }
  }

  for (int u = 0; u < n; u++)
    if (cns[u] == 0) q.push(u);

  while (! q.empty()) {
    int u = q.front(); q.pop();
    int &up = prts[u];

    if (up >= 0) {
      for (int i = 0; i < 2; i++)
	addrange(rls[up][i + 1], rrs[up][i + 1], rls[u][i], rrs[u][i]);
      if (--cns[up] == 0) q.push(up);
    }
  }
  for (int u = 0; false && u < n; u++) {
    printf("%d:", u);
    for (int i = 0; i < 3; i++) printf("(%d,%d)", rls[u][i], rrs[u][i]);
    putchar('\n');
  }

  st.init(n, LINF);

  for (int i = 0; i < n; i++) {
    int ai;
    scanf("%d", &ai);
    st.set(rls[i][0], ai);
  }
  st.setall();

  int qn;
  scanf("%d", &qn);

  while (qn--) {
    int x;
    scanf("%d", &x);

    int xn = 0;
    if (rls[x][1] >= 0)
      xls[xn] = rls[x][1], xrs[xn] = rrs[x][1], xn++;
    if (rls[x][2] >= 0)
      xls[xn] = rls[x][2], xrs[xn] = rrs[x][2], xn++;

    int &xp = prts[x];
    if (xp < 0)
      xls[xn] = rls[x][0], xrs[xn] = rrs[x][0], xn++;
    else {
      xls[xn] = rls[xp][0], xrs[xn] = rrs[xp][0], xn++;
      xls[xn] = rls[xp][1], xrs[xn] = rrs[xp][1], xn++;
      int &xpp = prts[xp];
      if (xpp >= 0)
	xls[xn] = rls[xpp][0], xrs[xn] = rrs[xpp][0], xn++;
    }

    ll sum = 0;
    for (int i = 0; i < xn; i++) sum += st.sum_range(xls[i], xrs[i]);

    for (int i = 0; i < xn; i++) st.set_range(xls[i], xrs[i], 0);
    st.set_range(rls[x][0], rrs[x][0], sum);

    printf("%lld\n", sum);
  }
  return 0;
}
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