oj.uz

Submission #234303

# Submission time Handle Problem Language Result Execution time Memory
234303 2020-05-24T00:04:40 Z xiaowuc1 Long Mansion (JOI17_long_mansion) C++14
100 / 100
 954 ms 36984 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 < 10; 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

# Verdict Execution time Memory Grader output
1 Correct 21 ms 20992 KB Output is correct
2 Correct 22 ms 20992 KB Output is correct
3 Correct 24 ms 21120 KB Output is correct
4 Correct 20 ms 20992 KB Output is correct
5 Correct 20 ms 21120 KB Output is correct
6 Correct 20 ms 20992 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 20992 KB Output is correct
2 Correct 22 ms 20992 KB Output is correct
3 Correct 24 ms 21120 KB Output is correct
4 Correct 20 ms 20992 KB Output is correct
5 Correct 20 ms 21120 KB Output is correct
6 Correct 20 ms 20992 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct
8 Correct 125 ms 24928 KB Output is correct
9 Correct 123 ms 24696 KB Output is correct
10 Correct 122 ms 24952 KB Output is correct
11 Correct 127 ms 25208 KB Output is correct
12 Correct 112 ms 24952 KB Output is correct
13 Correct 126 ms 25080 KB Output is correct
14 Correct 120 ms 24956 KB Output is correct
15 Correct 120 ms 25080 KB Output is correct
16 Correct 123 ms 25336 KB Output is correct
17 Correct 126 ms 24952 KB Output is correct
18 Correct 114 ms 24952 KB Output is correct
19 Correct 120 ms 25052 KB Output is correct
20 Correct 116 ms 25080 KB Output is correct
21 Correct 113 ms 25208 KB Output is correct
22 Correct 120 ms 25108 KB Output is correct
23 Correct 118 ms 24824 KB Output is correct
24 Correct 124 ms 24824 KB Output is correct
25 Correct 129 ms 24952 KB Output is correct
26 Correct 118 ms 24828 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 373 ms 27384 KB Output is correct
2 Correct 363 ms 27300 KB Output is correct
3 Correct 346 ms 27492 KB Output is correct
4 Correct 358 ms 27384 KB Output is correct
5 Correct 374 ms 27516 KB Output is correct
6 Correct 330 ms 26360 KB Output is correct
7 Correct 285 ms 26616 KB Output is correct
8 Correct 267 ms 26488 KB Output is correct
9 Correct 279 ms 26744 KB Output is correct
10 Correct 268 ms 26488 KB Output is correct
11 Correct 262 ms 26496 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 20992 KB Output is correct
2 Correct 22 ms 20992 KB Output is correct
3 Correct 24 ms 21120 KB Output is correct
4 Correct 20 ms 20992 KB Output is correct
5 Correct 20 ms 21120 KB Output is correct
6 Correct 20 ms 20992 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct
8 Correct 125 ms 24928 KB Output is correct
9 Correct 123 ms 24696 KB Output is correct
10 Correct 122 ms 24952 KB Output is correct
11 Correct 127 ms 25208 KB Output is correct
12 Correct 112 ms 24952 KB Output is correct
13 Correct 126 ms 25080 KB Output is correct
14 Correct 120 ms 24956 KB Output is correct
15 Correct 120 ms 25080 KB Output is correct
16 Correct 123 ms 25336 KB Output is correct
17 Correct 126 ms 24952 KB Output is correct
18 Correct 114 ms 24952 KB Output is correct
19 Correct 120 ms 25052 KB Output is correct
20 Correct 116 ms 25080 KB Output is correct
21 Correct 113 ms 25208 KB Output is correct
22 Correct 120 ms 25108 KB Output is correct
23 Correct 118 ms 24824 KB Output is correct
24 Correct 124 ms 24824 KB Output is correct
25 Correct 129 ms 24952 KB Output is correct
26 Correct 118 ms 24828 KB Output is correct
27 Correct 373 ms 27384 KB Output is correct
28 Correct 363 ms 27300 KB Output is correct
29 Correct 346 ms 27492 KB Output is correct
30 Correct 358 ms 27384 KB Output is correct
31 Correct 374 ms 27516 KB Output is correct
32 Correct 330 ms 26360 KB Output is correct
33 Correct 285 ms 26616 KB Output is correct
34 Correct 267 ms 26488 KB Output is correct
35 Correct 279 ms 26744 KB Output is correct
36 Correct 268 ms 26488 KB Output is correct
37 Correct 262 ms 26496 KB Output is correct
38 Correct 556 ms 28820 KB Output is correct
39 Correct 661 ms 29176 KB Output is correct
40 Correct 485 ms 28536 KB Output is correct
41 Correct 954 ms 28488 KB Output is correct
42 Correct 281 ms 26360 KB Output is correct
43 Correct 302 ms 25976 KB Output is correct
44 Correct 480 ms 28408 KB Output is correct
45 Correct 481 ms 28536 KB Output is correct
46 Correct 467 ms 28700 KB Output is correct
47 Correct 331 ms 26036 KB Output is correct
48 Correct 303 ms 25976 KB Output is correct
49 Correct 463 ms 27640 KB Output is correct
50 Correct 491 ms 28144 KB Output is correct
51 Correct 519 ms 28664 KB Output is correct
52 Correct 281 ms 30200 KB Output is correct
53 Correct 378 ms 33492 KB Output is correct
54 Correct 450 ms 36984 KB Output is correct
55 Correct 375 ms 33292 KB Output is correct