oj.uz

Submission #234305

# Submission time Handle Problem Language Result Execution time Memory
234305 2020-05-24T00:06:09 Z xiaowuc1 Long Mansion (JOI17_long_mansion) C++14
100 / 100
 619 ms 36472 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 < 2; 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 20 ms 20992 KB Output is correct
2 Correct 21 ms 20992 KB Output is correct
3 Correct 22 ms 20992 KB Output is correct
4 Correct 20 ms 20992 KB Output is correct
5 Correct 20 ms 20992 KB Output is correct
6 Correct 20 ms 20984 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 20 ms 20992 KB Output is correct
2 Correct 21 ms 20992 KB Output is correct
3 Correct 22 ms 20992 KB Output is correct
4 Correct 20 ms 20992 KB Output is correct
5 Correct 20 ms 20992 KB Output is correct
6 Correct 20 ms 20984 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct
8 Correct 131 ms 22648 KB Output is correct
9 Correct 125 ms 22636 KB Output is correct
10 Correct 129 ms 22776 KB Output is correct
11 Correct 138 ms 22952 KB Output is correct
12 Correct 114 ms 22904 KB Output is correct
13 Correct 128 ms 22904 KB Output is correct
14 Correct 127 ms 22904 KB Output is correct
15 Correct 122 ms 22908 KB Output is correct
16 Correct 114 ms 23160 KB Output is correct
17 Correct 124 ms 22904 KB Output is correct
18 Correct 124 ms 22904 KB Output is correct
19 Correct 126 ms 22904 KB Output is correct
20 Correct 119 ms 23032 KB Output is correct
21 Correct 121 ms 23160 KB Output is correct
22 Correct 121 ms 22904 KB Output is correct
23 Correct 123 ms 22904 KB Output is correct
24 Correct 123 ms 22776 KB Output is correct
25 Correct 134 ms 22776 KB Output is correct
26 Correct 126 ms 22776 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 274 ms 25464 KB Output is correct
2 Correct 273 ms 25208 KB Output is correct
3 Correct 266 ms 25440 KB Output is correct
4 Correct 273 ms 25336 KB Output is correct
5 Correct 279 ms 25336 KB Output is correct
6 Correct 259 ms 24440 KB Output is correct
7 Correct 233 ms 24696 KB Output is correct
8 Correct 226 ms 24568 KB Output is correct
9 Correct 230 ms 24696 KB Output is correct
10 Correct 221 ms 24572 KB Output is correct
11 Correct 226 ms 24696 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20992 KB Output is correct
2 Correct 21 ms 20992 KB Output is correct
3 Correct 22 ms 20992 KB Output is correct
4 Correct 20 ms 20992 KB Output is correct
5 Correct 20 ms 20992 KB Output is correct
6 Correct 20 ms 20984 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct
8 Correct 131 ms 22648 KB Output is correct
9 Correct 125 ms 22636 KB Output is correct
10 Correct 129 ms 22776 KB Output is correct
11 Correct 138 ms 22952 KB Output is correct
12 Correct 114 ms 22904 KB Output is correct
13 Correct 128 ms 22904 KB Output is correct
14 Correct 127 ms 22904 KB Output is correct
15 Correct 122 ms 22908 KB Output is correct
16 Correct 114 ms 23160 KB Output is correct
17 Correct 124 ms 22904 KB Output is correct
18 Correct 124 ms 22904 KB Output is correct
19 Correct 126 ms 22904 KB Output is correct
20 Correct 119 ms 23032 KB Output is correct
21 Correct 121 ms 23160 KB Output is correct
22 Correct 121 ms 22904 KB Output is correct
23 Correct 123 ms 22904 KB Output is correct
24 Correct 123 ms 22776 KB Output is correct
25 Correct 134 ms 22776 KB Output is correct
26 Correct 126 ms 22776 KB Output is correct
27 Correct 274 ms 25464 KB Output is correct
28 Correct 273 ms 25208 KB Output is correct
29 Correct 266 ms 25440 KB Output is correct
30 Correct 273 ms 25336 KB Output is correct
31 Correct 279 ms 25336 KB Output is correct
32 Correct 259 ms 24440 KB Output is correct
33 Correct 233 ms 24696 KB Output is correct
34 Correct 226 ms 24568 KB Output is correct
35 Correct 230 ms 24696 KB Output is correct
36 Correct 221 ms 24572 KB Output is correct
37 Correct 226 ms 24696 KB Output is correct
38 Correct 333 ms 27312 KB Output is correct
39 Correct 401 ms 27640 KB Output is correct
40 Correct 306 ms 27000 KB Output is correct
41 Correct 619 ms 27104 KB Output is correct
42 Correct 257 ms 24952 KB Output is correct
43 Correct 265 ms 24696 KB Output is correct
44 Correct 400 ms 27128 KB Output is correct
45 Correct 405 ms 27512 KB Output is correct
46 Correct 435 ms 27512 KB Output is correct
47 Correct 298 ms 25080 KB Output is correct
48 Correct 269 ms 24824 KB Output is correct
49 Correct 393 ms 26616 KB Output is correct
50 Correct 500 ms 27000 KB Output is correct
51 Correct 456 ms 27816 KB Output is correct
52 Correct 280 ms 29432 KB Output is correct
53 Correct 371 ms 32620 KB Output is correct
54 Correct 379 ms 36472 KB Output is correct
55 Correct 312 ms 32760 KB Output is correct