oj.uz

답안 #1083873

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1083873 2024-09-04T11:43:30 Z horiseun 늑대인간 (IOI18_werewolf) C++17
100 / 100
 1597 ms 273944 KB 
#include <iostream>
#include <vector>
#include <numeric>
#include <cassert>
#include <map>
#include <tuple>
#include <functional>
#include <algorithm>
#include <unordered_map>
#include "werewolf.h"
using namespace std;

struct Node {
  int l, r, sm;
  Node *lft, *rht;
  Node(int tl, int tr): l(tl), r(tr), sm(0) {
    if (l + 1 != r) {
      lft = new Node(l, (l + r) / 2);
      rht = new Node((l + r) / 2, r);
    } else {
      lft = rht = NULL;
    }
  }
  void update(int pos) {
    if (pos < l || r <= pos) {
      return;
    }
    if (l + 1 == r) {
      sm++;
      return;
    }
    lft->update(pos);
    rht->update(pos);
    sm = lft->sm + rht->sm;
  }
  int query(int ql, int qr) {
    if (qr <= l || r <= ql) {
      return 0;
    }
    if (ql <= l && r <= qr) {
      return sm;
    }
    return lft->query(ql, qr) + rht->query(ql, qr);
  }
};

int par[400005], processed[200005], jmp1[400005][20], jmp2[400005][20], jmpmn[400005][20], jmpmx[400005][20], mn[400005], mx[400005], in1[400005], out1[400005], in2[400005], out2[400005], pos[200005];
vector<int> adj[200005], krt1[400005], krt2[400005], ans;
vector<pair<int, int>> baseRange1, baseRange2, updates[200005];
vector<tuple<int, int, int, int>> queries;
map<tuple<int, int, int>, int> ret;
Node *root;

vector<int> check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
  for (int i = 0; i < (int) X.size(); i++) {
    adj[X[i]].push_back(Y[i]);
    adj[Y[i]].push_back(X[i]);
  }
  iota(par, par + 2 * N, 0);
  function<int(int)> find = [&](int x) -> int {
    return x == par[x] ? x : par[x] = find(par[x]);
  };
  int idx = N;
  function<void(int, int, bool)> merge = [&](int x, int y, bool one) -> void {
    x = find(x);
    y = find(y);
    if (x != y) {
      par[x] = par[y] = par[idx] = idx;
      if (one) {
        krt1[idx].push_back(x);
        krt1[idx].push_back(y);
      } else {
        krt2[idx].push_back(x);
        krt2[idx].push_back(y);
      }
      idx++;
    }
  };
  for (int i = N - 1; i >= 0; i--) {
    processed[i] = true;
    for (int j : adj[i]) {
      if (processed[j]) {
        merge(i, j, true);
      }
    }
  }
  int root1 = idx - 1;
  iota(par, par + 2 * N, 0);
  idx = N;
  fill(processed, processed + N, false);
  for (int i = 0; i < N; i++) {
    processed[i] = true;
    for (int j : adj[i]) {
      if (processed[j]) {
        merge(i, j, false);
      }
    }
  }
  int root2 = idx - 1;
  fill(mn, mn + 2 * N, 2e9);
  fill(&jmp1[0][0], &jmp1[0][0] + sizeof(jmp1) / sizeof(jmp1[0][0]), -1);
  fill(&jmpmn[0][0], &jmpmn[0][0] + sizeof(jmpmn) / sizeof(jmpmn[0][0]), 2e9);
  int counter = 0;
  function<void(int)> dfs1 = [&](int x) -> void {
    in1[x] = counter++;
    if (krt1[x].size() == 0) {
      mn[x] = x;
      baseRange1.push_back({in1[x], x});
    }
    for (int i : krt1[x]) {
      dfs1(i);
      mn[x] = min(mn[x], mn[i]);
    }
    for (int i : krt1[x]) {
      jmp1[i][0] = x;
      jmpmn[i][0] = mn[x];
    }
    out1[x] = counter++;
  };
  fill(mx, mx + 2 * N, -1);
  fill(&jmp2[0][0], &jmp2[0][0] + sizeof(jmp2) / sizeof(jmp2[0][0]), -1);
  fill(&jmpmx[0][0], &jmpmx[0][0] + sizeof(jmpmx) / sizeof(jmpmx[0][0]), 2e9);
  counter = 0;
  function<void(int)> dfs2 = [&](int x) -> void {
    in2[x] = counter++;
    if (krt2[x].size() == 0) {
      mx[x] = x;
      baseRange2.push_back({in2[x], x});
    }
    for (int i : krt2[x]) {
      dfs2(i);
      mx[x] = max(mx[x], mx[i]);
    }
    for (int i : krt2[x]) {
      jmp2[i][0] = x;
      jmpmx[i][0] = mx[x];
    }
    out2[x] = counter++;
  };
  dfs1(root1);
  dfs2(root2);
  for (int i = 1; i < 20; i++) {
    for (int j = 0; j < 2 * N; j++) {
      if (jmp1[j][i - 1] != -1) {
        jmp1[j][i] = jmp1[jmp1[j][i - 1]][i - 1];
        jmpmn[j][i] = min(jmpmn[j][i - 1], jmpmn[jmp1[j][i - 1]][i - 1]);
      }
      if (jmp2[j][i - 1] != -1) {
        jmp2[j][i] = jmp2[jmp2[j][i - 1]][i - 1];
        jmpmx[j][i] = max(jmpmx[j][i - 1], jmpmx[jmp2[j][i - 1]][i - 1]);
      }
    }
  }
  for (int i = 0, a, b, c, d; i < (int) S.size(); i++) {
    int curr = S[i];
    for (int j = 19; j >= 0; j--) {
      if (jmp1[curr][j] != -1 && jmpmn[curr][j] >= L[i]) {
        curr = jmp1[curr][j];
      }
    }
    a = lower_bound(baseRange1.begin(), baseRange1.end(), pair{in1[curr], -1}) - baseRange1.begin();
    b = upper_bound(baseRange1.begin(), baseRange1.end(), pair{out1[curr], -1}) - baseRange1.begin() - 1;
    curr = E[i];
    for (int j = 19; j >= 0; j--) {
      if (jmp2[curr][j] != -1 && jmpmx[curr][j] <= R[i]) {
        curr = jmp2[curr][j];
      }
    }
    c = lower_bound(baseRange2.begin(), baseRange2.end(), pair{in2[curr], -1}) - baseRange2.begin();
    d = upper_bound(baseRange2.begin(), baseRange2.end(), pair{out2[curr], -1}) - baseRange2.begin() - 1;
    queries.push_back({a, b, c, d});
  }
  for (auto [a, b, c, d] : queries) {
    updates[d].push_back({a, b});
    if (c - 1 >= 0) {
      updates[c - 1].push_back({a, b});
    }
  }
  for (int i = 0; i < N; i++) {
    pos[baseRange1[i].second] = i;
  }
  root = new Node(0, N + 5);
  for (int i = 0; i < N; i++) {
    root->update(pos[baseRange2[i].second]);
    for (auto [a, b] : updates[i]) {
      ret[{a, b, i}] = root->query(a, b + 1);
    }
  }
  for (auto &[a, b, c, d] : queries) {
    c--;
    if (ret[{a, b, d}] - ret[{a, b, c}] > 0) {
      ans.push_back(1);
    } else {
      ans.push_back(0);
    }
  }
  return ans;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 65 ms 153940 KB Output is correct
2 Correct 66 ms 153864 KB Output is correct
3 Correct 72 ms 153960 KB Output is correct
4 Correct 63 ms 153680 KB Output is correct
5 Correct 65 ms 153784 KB Output is correct
6 Correct 63 ms 153880 KB Output is correct
7 Correct 66 ms 153940 KB Output is correct
8 Correct 68 ms 153844 KB Output is correct
9 Correct 66 ms 153936 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 65 ms 153940 KB Output is correct
2 Correct 66 ms 153864 KB Output is correct
3 Correct 72 ms 153960 KB Output is correct
4 Correct 63 ms 153680 KB Output is correct
5 Correct 65 ms 153784 KB Output is correct
6 Correct 63 ms 153880 KB Output is correct
7 Correct 66 ms 153940 KB Output is correct
8 Correct 68 ms 153844 KB Output is correct
9 Correct 66 ms 153936 KB Output is correct
10 Correct 75 ms 155476 KB Output is correct
11 Correct 74 ms 155472 KB Output is correct
12 Correct 73 ms 155476 KB Output is correct
13 Correct 82 ms 155488 KB Output is correct
14 Correct 79 ms 155480 KB Output is correct
15 Correct 74 ms 155208 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1181 ms 260884 KB Output is correct
2 Correct 1361 ms 269704 KB Output is correct
3 Correct 1342 ms 262164 KB Output is correct
4 Correct 1012 ms 249664 KB Output is correct
5 Correct 1053 ms 251316 KB Output is correct
6 Correct 1269 ms 260196 KB Output is correct
7 Correct 761 ms 240572 KB Output is correct
8 Correct 1371 ms 269516 KB Output is correct
9 Correct 889 ms 249780 KB Output is correct
10 Correct 615 ms 235572 KB Output is correct
11 Correct 756 ms 243640 KB Output is correct
12 Correct 687 ms 237236 KB Output is correct
13 Correct 1597 ms 264152 KB Output is correct
14 Correct 1435 ms 264120 KB Output is correct
15 Correct 1374 ms 264244 KB Output is correct
16 Correct 1385 ms 264336 KB Output is correct
17 Correct 789 ms 240724 KB Output is correct

Subtask #4
51.0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 65 ms 153940 KB Output is correct
2 Correct 66 ms 153864 KB Output is correct
3 Correct 72 ms 153960 KB Output is correct
4 Correct 63 ms 153680 KB Output is correct
5 Correct 65 ms 153784 KB Output is correct
6 Correct 63 ms 153880 KB Output is correct
7 Correct 66 ms 153940 KB Output is correct
8 Correct 68 ms 153844 KB Output is correct
9 Correct 66 ms 153936 KB Output is correct
10 Correct 75 ms 155476 KB Output is correct
11 Correct 74 ms 155472 KB Output is correct
12 Correct 73 ms 155476 KB Output is correct
13 Correct 82 ms 155488 KB Output is correct
14 Correct 79 ms 155480 KB Output is correct
15 Correct 74 ms 155208 KB Output is correct
16 Correct 1181 ms 260884 KB Output is correct
17 Correct 1361 ms 269704 KB Output is correct
18 Correct 1342 ms 262164 KB Output is correct
19 Correct 1012 ms 249664 KB Output is correct
20 Correct 1053 ms 251316 KB Output is correct
21 Correct 1269 ms 260196 KB Output is correct
22 Correct 761 ms 240572 KB Output is correct
23 Correct 1371 ms 269516 KB Output is correct
24 Correct 889 ms 249780 KB Output is correct
25 Correct 615 ms 235572 KB Output is correct
26 Correct 756 ms 243640 KB Output is correct
27 Correct 687 ms 237236 KB Output is correct
28 Correct 1597 ms 264152 KB Output is correct
29 Correct 1435 ms 264120 KB Output is correct
30 Correct 1374 ms 264244 KB Output is correct
31 Correct 1385 ms 264336 KB Output is correct
32 Correct 789 ms 240724 KB Output is correct
33 Correct 1406 ms 263520 KB Output is correct
34 Correct 586 ms 203448 KB Output is correct
35 Correct 1554 ms 269492 KB Output is correct
36 Correct 1317 ms 262328 KB Output is correct
37 Correct 1540 ms 268176 KB Output is correct
38 Correct 1349 ms 263352 KB Output is correct
39 Correct 1349 ms 272524 KB Output is correct
40 Correct 1087 ms 252448 KB Output is correct
41 Correct 1115 ms 258508 KB Output is correct
42 Correct 742 ms 238260 KB Output is correct
43 Correct 1594 ms 273944 KB Output is correct
44 Correct 1456 ms 266636 KB Output is correct
45 Correct 1047 ms 267072 KB Output is correct
46 Correct 1096 ms 267228 KB Output is correct
47 Correct 1270 ms 264372 KB Output is correct
48 Correct 1303 ms 264192 KB Output is correct
49 Correct 1362 ms 264476 KB Output is correct
50 Correct 1470 ms 264192 KB Output is correct
51 Correct 1061 ms 251672 KB Output is correct
52 Correct 1002 ms 251588 KB Output is correct