oj.uz

답안 #850520

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
850520 2023-09-16T19:11:47 Z MilosMilutinovic Long Mansion (JOI17_long_mansion) C++14
10 / 100
 3000 ms 29524 KB 
/**
 *    author:  wxhtzdy
 *    created: 16.09.2023 20:57:23
**/
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  int n;
  cin >> n;
  vector<int> c(n);
  for (int i = 0; i + 1 < n; i++) {
    cin >> c[i];
    --c[i];
  }
  vector<set<int>> pos(n);
  for (int i = 0; i < n; i++) {
    int k;
    cin >> k;
    for (int j = 0; j < k; j++) {
      int a;
      cin >> a;
      --a;
      pos[a].insert(i);
    }
  }
  auto Have = [&](int L, int R, int k) {
    auto it = pos[k].lower_bound(L);
    return (it != pos[k].end() && *it <= R);    
  };                         
  vector<int> L(n), R(n);
  vector<int> mx(4 * n);
  function<void(int, int, int, int)> Modify = [&](int x, int l, int r, int p) {
    if (l == r) {
      mx[l] = R[p];
      return;
    }
    int mid = l + r >> 1;
    if (p <= mid) {
      Modify(x * 2, l, mid, p); 
    } else {
      Modify(x * 2 + 1, mid + 1, r, p);
    } 
    mx[x] = max(mx[x * 2], mx[x * 2 + 1]);
  };
  function<int(int, int, int, int, int)> Query = [&](int x, int l, int r, int ll, int rr) {
    if (l > r || l > rr || r < ll) {
      return 0;
    }
    if (ll <= l && r <= rr) {
      return mx[x];
    }
    int mid = l + r >> 1;
    return max(Query(x * 2, l, mid, ll, rr), Query(x * 2 + 1, mid + 1, r, ll, rr));
  };
  for (int i = 0; i < n; i++) {
    L[i] = R[i] = i;
    while (true) {
      if (L[i] > 0 && Have(L[i], R[i], c[L[i] - 1])) {
        L[i] = L[L[i] - 1];
        R[i] = max(R[i], Query(1, 0, n - 1, L[i], i));
      } else if (R[i] + 1 < n && Have(L[i], R[i], c[R[i]])) {
        R[i] += 1;        
      } else {
        break;
      }
    }
    Modify(1, 0, n - 1, i);  
  }
  int q;
  cin >> q;
  while (q--) {
    int x, y;
    cin >> x >> y;
    --x; --y;
    cout << (L[x] <= y && y <= R[x] ? "YES" : "NO") << '\n';
  }                  
  return 0;
}

Compilation message

long_mansion.cpp: In lambda function:
long_mansion.cpp:41:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   41 |     int mid = l + r >> 1;
      |               ~~^~~
long_mansion.cpp: In lambda function:
long_mansion.cpp:56:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   56 |     int mid = l + r >> 1;
      |               ~~^~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 860 KB Output is correct
2 Correct 4 ms 860 KB Output is correct
3 Correct 11 ms 1168 KB Output is correct
4 Correct 3 ms 860 KB Output is correct
5 Correct 9 ms 852 KB Output is correct
6 Correct 4 ms 868 KB Output is correct
7 Correct 3 ms 720 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 860 KB Output is correct
2 Correct 4 ms 860 KB Output is correct
3 Correct 11 ms 1168 KB Output is correct
4 Correct 3 ms 860 KB Output is correct
5 Correct 9 ms 852 KB Output is correct
6 Correct 4 ms 868 KB Output is correct
7 Correct 3 ms 720 KB Output is correct
8 Correct 76 ms 4692 KB Output is correct
9 Correct 78 ms 4700 KB Output is correct
10 Correct 80 ms 4980 KB Output is correct
11 Correct 78 ms 5204 KB Output is correct
12 Correct 66 ms 4436 KB Output is correct
13 Correct 74 ms 4888 KB Output is correct
14 Correct 72 ms 4944 KB Output is correct
15 Correct 73 ms 4820 KB Output is correct
16 Correct 75 ms 5024 KB Output is correct
17 Correct 69 ms 4908 KB Output is correct
18 Correct 77 ms 4948 KB Output is correct
19 Correct 71 ms 4948 KB Output is correct
20 Correct 83 ms 5204 KB Output is correct
21 Correct 75 ms 4948 KB Output is correct
22 Correct 74 ms 4688 KB Output is correct
23 Correct 77 ms 4604 KB Output is correct
24 Correct 72 ms 4516 KB Output is correct
25 Correct 78 ms 4696 KB Output is correct
26 Correct 71 ms 4460 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3009 ms 29524 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 860 KB Output is correct
2 Correct 4 ms 860 KB Output is correct
3 Correct 11 ms 1168 KB Output is correct
4 Correct 3 ms 860 KB Output is correct
5 Correct 9 ms 852 KB Output is correct
6 Correct 4 ms 868 KB Output is correct
7 Correct 3 ms 720 KB Output is correct
8 Correct 76 ms 4692 KB Output is correct
9 Correct 78 ms 4700 KB Output is correct
10 Correct 80 ms 4980 KB Output is correct
11 Correct 78 ms 5204 KB Output is correct
12 Correct 66 ms 4436 KB Output is correct
13 Correct 74 ms 4888 KB Output is correct
14 Correct 72 ms 4944 KB Output is correct
15 Correct 73 ms 4820 KB Output is correct
16 Correct 75 ms 5024 KB Output is correct
17 Correct 69 ms 4908 KB Output is correct
18 Correct 77 ms 4948 KB Output is correct
19 Correct 71 ms 4948 KB Output is correct
20 Correct 83 ms 5204 KB Output is correct
21 Correct 75 ms 4948 KB Output is correct
22 Correct 74 ms 4688 KB Output is correct
23 Correct 77 ms 4604 KB Output is correct
24 Correct 72 ms 4516 KB Output is correct
25 Correct 78 ms 4696 KB Output is correct
26 Correct 71 ms 4460 KB Output is correct
27 Execution timed out 3009 ms 29524 KB Time limit exceeded
28 Halted 0 ms 0 KB -