Submission #343638

#	Time	Username	Problem	Language	Result	Execution time	Memory
343638		Pety	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	0 / 100	646 ms	262148 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

int n, m, w[1000002];
struct nodA {
  int max, inv;
  set<int>s;
} aint[4000002];
int ans = 0, mx = 0;

void build (int nod, int st, int dr) {
  if (st == dr) {
    aint[nod].max = w[st];
    aint[nod].inv = 0;
    aint[nod].s.insert(w[st]);
    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);
  aint[nod].max = max(aint[2 * nod].max, aint[2 * nod + 1].max);
  auto it = aint[2 * nod + 1].s.lower_bound(aint[2 * nod].max);
  if (it != aint[2 * nod + 1].s.begin()) {
    it--;
    aint[nod].inv = max(aint[nod].inv, aint[2 * nod].max + *it);
  }
  for (int i = st; i <= dr; i++)
    aint[nod].s.insert(w[i]);
}

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, aint[nod].max);
    }
    else {
      ans = max(ans, aint[nod].inv);
      auto it = aint[nod].s.lower_bound(mx);
      if (it != aint[nod].s.begin()) {
        it--;
        ans = max(ans, mx + *it);
      }
    }
    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()
{
  cin >> n >> m;
  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 = -1;
    query(1, 1, n, l, r);
    cout << (ans <= k) << "\n";
  }
  return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23