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Submission #1073473

# Submission time Handle Problem Language Result Execution time Memory
1073473 2024-08-24T15:10:46 Z fv3 Radio Towers (IOI22_towers) C++17
0 / 100
 4000 ms 2956 KB 
#include "towers.h"
#include <bits/stdc++.h>

using namespace std;
const int INF = 1 << 30;

int N;
vector<int> H;

void init(int N_, vector<int> H_)
{
  N = N_;
  H = H_;
}

int max_towers(int L, int R, int D) 
{
  // You should always lease the smallest tower
  // No two adjacent towers can be leased

  int res = 0;
  vector<int> leased(N);
  vector<int> neighbour(N);
  while (true)
  {
    int mn = INF;
    int mn_index = -1;

    for (int i = L; i <= R; i++)
    {
      if (!leased[i] && !neighbour[i] && H[i] < mn)
      {
        mn = H[i];
        mn_index = i;
      }
    }
    if (mn == INF) break;

    int mx = mn;
    for (int i = mn_index + 1; i <= R; i++)
    {
      if (leased[i])
      {
        if (mx - mn < D) 
          return res;
      }
      else
      {
        mx = max(mx, H[i]);
      }
    }

    mx = mn;
    for (int i = mn_index - 1; i >= L; i--)
    {
      if (leased[i])
      {
        if (mx - mn < D) 
          return res;
      }
      else
      {
        mx = max(mx, H[i]);
      }
    }

    res++;
    leased[mn_index] = 1;
    if (mn_index > L) neighbour[mn_index-1] = 1;
    if (mn_index < R) neighbour[mn_index+1] = 1;
  }

  return res;
}

Subtask #1
0 / 4.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4086 ms 2956 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB 1st lines differ - on the 1st token, expected: '13', found: '8'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB 1st lines differ - on the 1st token, expected: '13', found: '8'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 14.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4038 ms 1976 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4051 ms 1408 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB 1st lines differ - on the 1st token, expected: '13', found: '8'
2 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 4086 ms 2956 KB Time limit exceeded
2 Halted 0 ms 0 KB -