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Submission #825015

# Submission time Handle Problem Language Result Execution time Memory
825015 2023-08-14T13:25:50 Z LittleCube Radio Towers (IOI22_towers) C++17
17 / 100
 651 ms 5784 KB 
#include "towers.h"
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

namespace
{
  int N;
  vector<int> H, p, l, r, vis;
  map<int, int> mp;
}

void init(int _N, vector<int> _H)
{
  N = _N;
  H = _H;
  H.emplace_back(2e9);

  p = vector<int>(N + 1, 0);
  vector<int> l = p, r = p, vis = p;
  vector<int> mono = {N};

  for (int i = 0; i <= N; i++)
  {
    while (H[mono.back()] < H[i])
      r[mono.back()] = i, mono.pop_back();
    l[i] = mono.back();
    mono.push_back(i);
  }

  for (int i = 0; i < N; i++)
    if (H[l[i]] < H[r[i]])
      p[i] = l[i];
    else
      p[i] = r[i];
  p[N] = N + 1;
  vector<int> v;
  for (int i = 0; i < N; i++)
    vis[p[i]] = 1;
  for (int i = 0; i < N; i++)
    if (!vis[i])
      v.emplace_back(i);
  sort(v.begin(), v.end(), [&](int i, int j)
       { return H[i] < H[j]; });
  
  for (int i = 0; i <= N; i++)
    vis[i] = 0;
  vector<int> inc;
  for (auto i : v)
  {
    int c = i, D = 0;
    while (c != N + 1)
    {
      D = H[c] - H[i];
      if(vis[c])
        break;
      vis[c] = 1;
      c = p[c];
    }
    inc.emplace_back(D);
  }
  sort(inc.begin(), inc.end(), greater<>());
  int acc = 0;
  for (auto i : inc)
  {
    acc++;
    mp[i] = acc;
  }
}

int max_towers(int L, int R, int D)
{
  return mp.lower_bound(D)->second;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Incorrect 330 ms 2020 KB 1st lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB 1st lines differ - on the 1st token, expected: '13', found: '131'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB 1st lines differ - on the 1st token, expected: '13', found: '131'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 448 ms 4764 KB 1st lines differ - on the 1st token, expected: '11903', found: '33010'
2 Halted 0 ms 0 KB -

Subtask #5
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 133 ms 1388 KB Output is correct
2 Correct 564 ms 4760 KB Output is correct
3 Correct 594 ms 4756 KB Output is correct
4 Correct 638 ms 5784 KB Output is correct
5 Correct 594 ms 5668 KB Output is correct
6 Correct 651 ms 5784 KB Output is correct
7 Correct 617 ms 5672 KB Output is correct
8 Correct 534 ms 2968 KB Output is correct
9 Correct 620 ms 3868 KB Output is correct
10 Correct 543 ms 3016 KB Output is correct
11 Correct 608 ms 3784 KB Output is correct
12 Correct 20 ms 4780 KB Output is correct
13 Correct 24 ms 5668 KB Output is correct
14 Correct 23 ms 5672 KB Output is correct
15 Correct 17 ms 3872 KB Output is correct
16 Correct 17 ms 2964 KB Output is correct
17 Correct 22 ms 4648 KB Output is correct
18 Correct 22 ms 4748 KB Output is correct
19 Correct 21 ms 4744 KB Output is correct
20 Correct 23 ms 5780 KB Output is correct
21 Correct 23 ms 5776 KB Output is correct
22 Correct 23 ms 5668 KB Output is correct
23 Correct 25 ms 5784 KB Output is correct
24 Correct 10 ms 2976 KB Output is correct
25 Correct 10 ms 3856 KB Output is correct
26 Correct 12 ms 2972 KB Output is correct
27 Correct 11 ms 3924 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 0 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 0 ms 336 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 336 KB Output is correct
36 Correct 1 ms 336 KB Output is correct
37 Correct 1 ms 336 KB Output is correct
38 Correct 1 ms 336 KB Output is correct
39 Correct 1 ms 336 KB Output is correct
40 Correct 1 ms 336 KB Output is correct
41 Correct 0 ms 336 KB Output is correct
42 Correct 0 ms 336 KB Output is correct
43 Correct 1 ms 336 KB Output is correct

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 208 KB 1st lines differ - on the 1st token, expected: '13', found: '131'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 330 ms 2020 KB 1st lines differ - on the 1st token, expected: '1', found: '2'
2 Halted 0 ms 0 KB -