oj.uz

Submission #1027709

# Submission time Handle Problem Language Result Execution time Memory
1027709 2024-07-19T09:23:06 Z 우민규(#10951) Sushi (JOI16_sushi) C++17
5 / 100
 12000 ms 73164 KB 
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'

const int bucket = 1;

int n, q;

struct Segment {
  vector<int> arr;
  priority_queue<int> in_arr;
  vector<int> queued;
  int push(int x) {
    queued.push_back(x);
    in_arr.push(x);
    auto out = in_arr.top();
    in_arr.pop();
    if (queued.size() > bucket) {
      // rebuild this segment
      apply();
      build();
    }
    return out;
  }
  void apply() {
    // rebuild arr, clear queued, don't modify in_arr

    priority_queue<int, vector<int>, greater<int>> in_queue;
    for (auto q : queued) in_queue.push(q);
    for (auto& a : arr) {
      in_queue.push(a);
      a = in_queue.top();
      in_queue.pop();
    }
    queued.clear();
  }
  void build() {
    while (!in_arr.empty()) in_arr.pop();
    for (auto a : arr) in_arr.push(a);
  }
};

void solve() {
  cin >> n >> q;
  vector<Segment> segments((n + bucket - 1) / bucket);
  for (int i = 0; i < n; ++i) {
    int x;
    cin >> x;
    segments[i / bucket].arr.push_back(x);
  }
  for (auto& s : segments) s.build();
  auto query_naive = [&](int l, int r, int b, int p) {
    segments[b].apply();
    for (int i = l; i < r; ++i) {
      if (p < segments[b].arr[i]) {
        swap(p, segments[b].arr[i]);
      }
    }
    segments[b].build();
    return p;
  };
  auto query = [&](int s, int t, int p) {
    int sb = s / bucket, tb = (t - 1) / bucket;
    if (sb == tb) {
      return query_naive(s - sb * bucket, t - sb * bucket, sb, p);
    }
    p = query_naive(s - sb * bucket, bucket, sb, p);
    for (int i = sb + 1; i < tb; ++i) {
      p = segments[i].push(p);
    }
    return query_naive(0, t - tb * bucket, tb, p);
  };
  for (int i = 0; i < q; ++i) {
    if (i == 3) {
      int x = 3;
    }
    int s, t, p;
    cin >> s >> t >> p;
    s -= 1;
    // s -> t-1
    if (s >= t) {
      // s -> N-1, 0 -> t
      p = query(s, n, p);
      s = 0;
    }
    cout << query(s, t, p) << "\n";
  }
}

int main() {
  cin.tie(0)->sync_with_stdio(0);
  int t = 1;

  while (t--) {
    solve();
  }
  return 0;
}

Compilation message

sushi.cpp: In function 'void solve()':
sushi.cpp:75:11: warning: unused variable 'x' [-Wunused-variable]
   75 |       int x = 3;
      |           ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 856 KB Output is correct
2 Correct 84 ms 860 KB Output is correct
3 Correct 94 ms 860 KB Output is correct
4 Correct 92 ms 856 KB Output is correct
5 Correct 85 ms 600 KB Output is correct
6 Correct 88 ms 848 KB Output is correct
7 Correct 89 ms 820 KB Output is correct
8 Correct 88 ms 604 KB Output is correct
9 Correct 114 ms 860 KB Output is correct
10 Correct 86 ms 868 KB Output is correct
11 Correct 87 ms 872 KB Output is correct
12 Correct 93 ms 860 KB Output is correct
13 Correct 92 ms 860 KB Output is correct
14 Correct 162 ms 856 KB Output is correct
15 Correct 162 ms 876 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 456 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Execution timed out 12063 ms 73164 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 87 ms 856 KB Output is correct
2 Correct 84 ms 860 KB Output is correct
3 Correct 94 ms 860 KB Output is correct
4 Correct 92 ms 856 KB Output is correct
5 Correct 85 ms 600 KB Output is correct
6 Correct 88 ms 848 KB Output is correct
7 Correct 89 ms 820 KB Output is correct
8 Correct 88 ms 604 KB Output is correct
9 Correct 114 ms 860 KB Output is correct
10 Correct 86 ms 868 KB Output is correct
11 Correct 87 ms 872 KB Output is correct
12 Correct 93 ms 860 KB Output is correct
13 Correct 92 ms 860 KB Output is correct
14 Correct 162 ms 856 KB Output is correct
15 Correct 162 ms 876 KB Output is correct
16 Correct 1 ms 600 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 456 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Execution timed out 12063 ms 73164 KB Time limit exceeded
24 Halted 0 ms 0 KB -