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답안 #234306

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
234306 2020-05-24T00:06:57 Z xiaowuc1 Long Mansion (JOI17_long_mansion) C++14
100 / 100
 555 ms 36216 KB 
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <vector>

using namespace std;

// BEGIN NO SAD
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
typedef vector<int> vi;
// END NO SAD

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<vector<ll>> matrix;

typedef pair<ll, ll> pll;

const int KOOSAGA_SZ = 1 << 19;
pii koosagatree[2 * KOOSAGA_SZ];
int connect[KOOSAGA_SZ];
vector<int> keystorooms[KOOSAGA_SZ];
bool hasinrange(int key, int lhs, int rhs) {
  auto it = lower_bound(all(keystorooms[key]), lhs);
  return it != keystorooms[key].end() && *it <= rhs;
}
int n;
pii merge(pii a, pii b) {
  return pii(min(a.first,b.first), max(a.second,b.second));
}
void upd(int idx, pii v) {
  idx += KOOSAGA_SZ;
  koosagatree[idx] = merge(koosagatree[idx], v);
  while(idx > 1) {
    idx /= 2;
    koosagatree[idx] = merge(koosagatree[2*idx], koosagatree[2*idx+1]);
  }
}
pii qry(int lhs, int rhs) {
  pii ret = {1e9, 0};
  lhs += KOOSAGA_SZ;
  rhs += KOOSAGA_SZ;
  while(lhs <= rhs) {
    if(lhs == rhs) return merge(ret, koosagatree[lhs]);
    if(lhs%2) ret = merge(ret, koosagatree[lhs++]);
    if(rhs%2==0) ret = merge(ret, koosagatree[rhs--]);
    lhs /= 2;
    rhs /= 2;
  }
  return ret;
}

void realprop() {
  for(int i = 1; i <= n; i++) {
    while(true) {
      pii val = qry(koosagatree[i+KOOSAGA_SZ].first, koosagatree[i+KOOSAGA_SZ].second);
      bool dirty = val != koosagatree[i + KOOSAGA_SZ];
      if(val.first > 1) {
        int need = connect[val.first-1];
        if(hasinrange(need, val.first, val.second)) {
          dirty = true;
          val.first--;
        }
      }
      if(val.second < n) {
        int need = connect[val.second];
        if(hasinrange(need, val.first, val.second)) {
          dirty = true;
          val.second++;
        }
      }
      if(!dirty) break;
      upd(i, val);
    }
  }
}
void prop() {
  for(int qq = 0; qq < 1; qq++) realprop();
}
void init() {
  for(int i = 0; i < KOOSAGA_SZ; i++) koosagatree[i+KOOSAGA_SZ] = {i, i};
  for(int i = KOOSAGA_SZ-1; i > 0; i--) {
    koosagatree[i] = merge(koosagatree[2*i], koosagatree[2*i+1]);
  }
}

void solve() {
  cin >> n;
  for(int i = 1; i < n; i++) cin >> connect[i];
  for(int i = 1; i <= n; i++) {
    int k;
    cin >> k;
    while(k--) {
      int key;
      cin >> key;
      keystorooms[key].push_back(i);
    }
  }
  init();
  prop();
  int q;
  cin >> q;
  while(q--) {
    int x, y;
    cin >> x >> y;
    pii ret = koosagatree[x + KOOSAGA_SZ];
    if(ret.first <= y && y <= ret.second) cout << "YES\n";
    else cout << "NO\n";
  }
}

// are there edge cases (N=1?)
// are array sizes proper (scaled by proper constant, for example 2* for koosaga tree)
// integer overflow?
// DS reset properly between test cases

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL); cout.tie(NULL);
  solve();
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 20864 KB Output is correct
2 Correct 20 ms 20992 KB Output is correct
3 Correct 21 ms 20992 KB Output is correct
4 Correct 19 ms 20992 KB Output is correct
5 Correct 20 ms 20864 KB Output is correct
6 Correct 19 ms 20992 KB Output is correct
7 Correct 18 ms 20992 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 20864 KB Output is correct
2 Correct 20 ms 20992 KB Output is correct
3 Correct 21 ms 20992 KB Output is correct
4 Correct 19 ms 20992 KB Output is correct
5 Correct 20 ms 20864 KB Output is correct
6 Correct 19 ms 20992 KB Output is correct
7 Correct 18 ms 20992 KB Output is correct
8 Correct 121 ms 22392 KB Output is correct
9 Correct 123 ms 22520 KB Output is correct
10 Correct 120 ms 22648 KB Output is correct
11 Correct 120 ms 22776 KB Output is correct
12 Correct 112 ms 22776 KB Output is correct
13 Correct 133 ms 22648 KB Output is correct
14 Correct 125 ms 22648 KB Output is correct
15 Correct 117 ms 22776 KB Output is correct
16 Correct 121 ms 22904 KB Output is correct
17 Correct 124 ms 22624 KB Output is correct
18 Correct 120 ms 22744 KB Output is correct
19 Correct 116 ms 22648 KB Output is correct
20 Correct 119 ms 22776 KB Output is correct
21 Correct 122 ms 22904 KB Output is correct
22 Correct 124 ms 22776 KB Output is correct
23 Correct 119 ms 22520 KB Output is correct
24 Correct 120 ms 22520 KB Output is correct
25 Correct 122 ms 22520 KB Output is correct
26 Correct 116 ms 22520 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 268 ms 25464 KB Output is correct
2 Correct 267 ms 24952 KB Output is correct
3 Correct 250 ms 25056 KB Output is correct
4 Correct 256 ms 25212 KB Output is correct
5 Correct 262 ms 25080 KB Output is correct
6 Correct 252 ms 24312 KB Output is correct
7 Correct 225 ms 24444 KB Output is correct
8 Correct 218 ms 24444 KB Output is correct
9 Correct 218 ms 24440 KB Output is correct
10 Correct 223 ms 24440 KB Output is correct
11 Correct 224 ms 24440 KB Output is correct

Subtask #4
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 20864 KB Output is correct
2 Correct 20 ms 20992 KB Output is correct
3 Correct 21 ms 20992 KB Output is correct
4 Correct 19 ms 20992 KB Output is correct
5 Correct 20 ms 20864 KB Output is correct
6 Correct 19 ms 20992 KB Output is correct
7 Correct 18 ms 20992 KB Output is correct
8 Correct 121 ms 22392 KB Output is correct
9 Correct 123 ms 22520 KB Output is correct
10 Correct 120 ms 22648 KB Output is correct
11 Correct 120 ms 22776 KB Output is correct
12 Correct 112 ms 22776 KB Output is correct
13 Correct 133 ms 22648 KB Output is correct
14 Correct 125 ms 22648 KB Output is correct
15 Correct 117 ms 22776 KB Output is correct
16 Correct 121 ms 22904 KB Output is correct
17 Correct 124 ms 22624 KB Output is correct
18 Correct 120 ms 22744 KB Output is correct
19 Correct 116 ms 22648 KB Output is correct
20 Correct 119 ms 22776 KB Output is correct
21 Correct 122 ms 22904 KB Output is correct
22 Correct 124 ms 22776 KB Output is correct
23 Correct 119 ms 22520 KB Output is correct
24 Correct 120 ms 22520 KB Output is correct
25 Correct 122 ms 22520 KB Output is correct
26 Correct 116 ms 22520 KB Output is correct
27 Correct 268 ms 25464 KB Output is correct
28 Correct 267 ms 24952 KB Output is correct
29 Correct 250 ms 25056 KB Output is correct
30 Correct 256 ms 25212 KB Output is correct
31 Correct 262 ms 25080 KB Output is correct
32 Correct 252 ms 24312 KB Output is correct
33 Correct 225 ms 24444 KB Output is correct
34 Correct 218 ms 24444 KB Output is correct
35 Correct 218 ms 24440 KB Output is correct
36 Correct 223 ms 24440 KB Output is correct
37 Correct 224 ms 24440 KB Output is correct
38 Correct 306 ms 27000 KB Output is correct
39 Correct 319 ms 27520 KB Output is correct
40 Correct 276 ms 26744 KB Output is correct
41 Correct 555 ms 26720 KB Output is correct
42 Correct 236 ms 24824 KB Output is correct
43 Correct 246 ms 24440 KB Output is correct
44 Correct 395 ms 27000 KB Output is correct
45 Correct 375 ms 27004 KB Output is correct
46 Correct 405 ms 27308 KB Output is correct
47 Correct 249 ms 24952 KB Output is correct
48 Correct 249 ms 24440 KB Output is correct
49 Correct 410 ms 26488 KB Output is correct
50 Correct 420 ms 26872 KB Output is correct
51 Correct 421 ms 27640 KB Output is correct
52 Correct 242 ms 29176 KB Output is correct
53 Correct 299 ms 32372 KB Output is correct
54 Correct 343 ms 36216 KB Output is correct
55 Correct 309 ms 32540 KB Output is correct