oj.uz

Submission #525244

# Submission time Handle Problem Language Result Execution time Memory
525244 2022-02-11T07:33:44 Z Pety Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
77 / 100
 1584 ms 178080 KB 
#include <iostream>
#include<vector>
#include<algorithm>
#pragma GCC optimize("O2")
#pragma GCC optimize("Os")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("O1")
#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2,fma")
 
 
using namespace std;
 
const int N = 1e6;
int n, m, w[N + 2], cnt, lg2[N + 2];
struct nodA {
  int inv, st, dr;
  bool sorted;
} aint[4 * N + 2];
vector<int>all;
int ans = 0, mx = 0;
 
 
void build (int nod, int st, int dr) {
  if (st == dr) {
    aint[nod].inv = 0;
    aint[nod].st = all.size();
    all.push_back(w[st]);
    aint[nod].dr = all.size();
    aint[nod].sorted = 1;
    return;
  }
  int mid = (st + dr) / 2;
  build(2 * nod, st, mid);
  build(2 * nod + 1, mid + 1, dr);
  aint[nod].inv = max(aint[2 * nod].inv, aint[2 * nod + 1].inv);
  auto it = lower_bound(all.begin() + aint[2 * nod + 1].st,  all.begin() + aint[2 * nod + 1].dr, all[aint[2 * nod].dr - 1])-all.begin();
  if (it != aint[2 * nod + 1].st) {
    it--;
    aint[nod].inv = max(aint[nod].inv, all[aint[2 * nod].dr - 1] + all[it]);
  }
  aint[nod].st = all.size();
  int i = aint[2* nod].st, j = aint[2 * nod + 1].st;
  while (i < aint[2 * nod].dr&& j < aint[2 * nod + 1].dr) {
    if (all[i] == all[j]) {
      int x = all[i];
      all.push_back(all[i]);
      all.push_back(all[i]);
      i++;
      j++;
    }
    else if (all[i]< all[j]) {
      all.push_back(all[i]);
      i++;
    }
    else if (all[i] > all[j]) {
      all.push_back(all[j]);
      j++;
    }
  }
  while (i < aint[2 * nod].dr)
    all.push_back(all[i++]);
  while (j < aint[2 * nod + 1].dr)
    all.push_back(all[j++]);
  aint[nod].dr = all.size();
  aint[nod].sorted = (aint[2 * nod].sorted & aint[2 * nod + 1].sorted & w[mid] <= w[mid + 1]);
}
 
int lastdr;
bool ok;
 
void query (int nod, int st, int dr, int a, int b) {
  if (a <= st && dr <= b) {
    if (mx == -1) {
      ans = aint[nod].inv;
      mx = max(mx, all[aint[nod].dr - 1]);
      ok &= aint[nod].sorted;
      lastdr = dr;
    }
    else {
      if (n <= 200000) {
        ans = max(ans, aint[nod].inv);
        int poz = aint[nod].st - 1;
        int l = lg2[dr - st + 1];
        for (int pas = (1 << (l + 1)); pas; (pas >>= 1))
          if (poz + pas < aint[nod].dr && all[poz + pas] < mx)
            poz += pas;
        if (poz != aint[nod].st - 1) {
          ans = max(ans, mx + all[poz]);
        }
      }
      ok &= aint[nod].sorted;
      ok &= (w[lastdr] <= w[lastdr + 1]);
      mx = max(mx, all[aint[nod].dr - 1]);
      lastdr = dr;
    }
    return;
  }
  int mid = (st + dr) / 2;
  if (a <= mid)
    query(2 * nod, st, mid, a, b);
  if (b > mid)
    query(2 * nod + 1, mid + 1, dr, a, b);
}
 
int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n >> m;
  for (int i = 2; i <= n; i++)
    lg2[i] = lg2[i / 2] + 1;
  for (int i = 1; i <= n; i++)
    cin >> w[i];
  build(1, 1, n);
  for (int i = 1; i <= m; i++) {
    int l, r, k;
    cin >> l >> r >> k;
    ans = mx = lastdr = -1;
    ok = 1;
    query(1, 1, n, l, r);
    if (n > 200000) {
      cout << ok << "\n";
    }
    else {
      cout << (ans <= k) << "\n";
    }
  }
  return 0;
}

Compilation message

sortbooks.cpp: In function 'void build(int, int, int)':
sortbooks.cpp:46:11: warning: unused variable 'x' [-Wunused-variable]
   46 |       int x = all[i];
      |           ^
sortbooks.cpp:66:80: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   66 |   aint[nod].sorted = (aint[2 * nod].sorted & aint[2 * nod + 1].sorted & w[mid] <= w[mid + 1]);
      |                                                                         ~~~~~~~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 3 ms 588 KB Output is correct
12 Correct 4 ms 976 KB Output is correct
13 Correct 5 ms 976 KB Output is correct
14 Correct 6 ms 1232 KB Output is correct
15 Correct 6 ms 1232 KB Output is correct
16 Correct 4 ms 1232 KB Output is correct
17 Correct 3 ms 848 KB Output is correct
18 Correct 4 ms 1232 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1584 ms 168276 KB Output is correct
2 Correct 1496 ms 168292 KB Output is correct
3 Correct 1508 ms 168456 KB Output is correct
4 Correct 1547 ms 168452 KB Output is correct
5 Correct 1512 ms 168380 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 12452 KB Output is correct
2 Correct 133 ms 12580 KB Output is correct
3 Correct 146 ms 12376 KB Output is correct
4 Correct 156 ms 12912 KB Output is correct
5 Correct 144 ms 12984 KB Output is correct
6 Correct 137 ms 12936 KB Output is correct
7 Correct 128 ms 12892 KB Output is correct
8 Correct 110 ms 12960 KB Output is correct
9 Correct 36 ms 1012 KB Output is correct
10 Correct 107 ms 12940 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 3 ms 588 KB Output is correct
12 Correct 4 ms 976 KB Output is correct
13 Correct 5 ms 976 KB Output is correct
14 Correct 6 ms 1232 KB Output is correct
15 Correct 6 ms 1232 KB Output is correct
16 Correct 4 ms 1232 KB Output is correct
17 Correct 3 ms 848 KB Output is correct
18 Correct 4 ms 1232 KB Output is correct
19 Correct 396 ms 25400 KB Output is correct
20 Correct 342 ms 25232 KB Output is correct
21 Correct 281 ms 25252 KB Output is correct
22 Correct 288 ms 25704 KB Output is correct
23 Correct 273 ms 25732 KB Output is correct
24 Correct 324 ms 25672 KB Output is correct
25 Correct 313 ms 25768 KB Output is correct
26 Correct 387 ms 25748 KB Output is correct
27 Correct 385 ms 25872 KB Output is correct
28 Correct 421 ms 25744 KB Output is correct
29 Correct 398 ms 25732 KB Output is correct
30 Correct 422 ms 25740 KB Output is correct
31 Correct 393 ms 25712 KB Output is correct
32 Correct 409 ms 25744 KB Output is correct
33 Correct 396 ms 25744 KB Output is correct
34 Correct 322 ms 25744 KB Output is correct
35 Correct 316 ms 25740 KB Output is correct
36 Correct 317 ms 25744 KB Output is correct
37 Correct 315 ms 25744 KB Output is correct
38 Correct 332 ms 25740 KB Output is correct
39 Correct 304 ms 25720 KB Output is correct
40 Correct 219 ms 22236 KB Output is correct
41 Correct 270 ms 25748 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 3 ms 588 KB Output is correct
12 Correct 4 ms 976 KB Output is correct
13 Correct 5 ms 976 KB Output is correct
14 Correct 6 ms 1232 KB Output is correct
15 Correct 6 ms 1232 KB Output is correct
16 Correct 4 ms 1232 KB Output is correct
17 Correct 3 ms 848 KB Output is correct
18 Correct 4 ms 1232 KB Output is correct
19 Correct 1584 ms 168276 KB Output is correct
20 Correct 1496 ms 168292 KB Output is correct
21 Correct 1508 ms 168456 KB Output is correct
22 Correct 1547 ms 168452 KB Output is correct
23 Correct 1512 ms 168380 KB Output is correct
24 Correct 139 ms 12452 KB Output is correct
25 Correct 133 ms 12580 KB Output is correct
26 Correct 146 ms 12376 KB Output is correct
27 Correct 156 ms 12912 KB Output is correct
28 Correct 144 ms 12984 KB Output is correct
29 Correct 137 ms 12936 KB Output is correct
30 Correct 128 ms 12892 KB Output is correct
31 Correct 110 ms 12960 KB Output is correct
32 Correct 36 ms 1012 KB Output is correct
33 Correct 107 ms 12940 KB Output is correct
34 Correct 396 ms 25400 KB Output is correct
35 Correct 342 ms 25232 KB Output is correct
36 Correct 281 ms 25252 KB Output is correct
37 Correct 288 ms 25704 KB Output is correct
38 Correct 273 ms 25732 KB Output is correct
39 Correct 324 ms 25672 KB Output is correct
40 Correct 313 ms 25768 KB Output is correct
41 Correct 387 ms 25748 KB Output is correct
42 Correct 385 ms 25872 KB Output is correct
43 Correct 421 ms 25744 KB Output is correct
44 Correct 398 ms 25732 KB Output is correct
45 Correct 422 ms 25740 KB Output is correct
46 Correct 393 ms 25712 KB Output is correct
47 Correct 409 ms 25744 KB Output is correct
48 Correct 396 ms 25744 KB Output is correct
49 Correct 322 ms 25744 KB Output is correct
50 Correct 316 ms 25740 KB Output is correct
51 Correct 317 ms 25744 KB Output is correct
52 Correct 315 ms 25744 KB Output is correct
53 Correct 332 ms 25740 KB Output is correct
54 Correct 304 ms 25720 KB Output is correct
55 Correct 219 ms 22236 KB Output is correct
56 Correct 270 ms 25748 KB Output is correct
57 Incorrect 1562 ms 178080 KB Output isn't correct
58 Halted 0 ms 0 KB -