Submission #1037479

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037479		omarpaladines95	Meetings (IOI18_meetings)	C++14	4 / 100	5590 ms	253228 KiB

meetings

#include "meetings.h"

#include <bits/stdc++.h>

using namespace std;

void ComputeDistanceMatrix(int N, const std::vector<int>& H, std::vector<std::vector<int>>& D)
{
  for (int i = 0; i < N; ++i)
  {
    D[i][i] = H[i];
    for (int j = i+1; j < N; ++j)
    {
      D[i][j] = max(H[j], D[i][j-1]);
    }
  }
}

long long minCostForCandidateIdx (const std::vector<int>& H, int L, int R, int candidateIdx,
 const std::vector<std::vector<int>>& D)
{
  long long costForCandidate = 0;
  for (int i = L; i < candidateIdx; ++i)
  {
    costForCandidate += D[i][candidateIdx];
  }
  for (int i = candidateIdx; i <= R; ++i)
  {
    costForCandidate += D[candidateIdx][i];
  }
  return costForCandidate;
}

std::vector<long long> minimum_costs(std::vector<int> H, std::vector<int> L,
                                     std::vector<int> R) {
  int Q = L.size();
  std::vector<long long> C(Q);

  int N = H.size();
  std::vector<std::vector<int>> distanceMatrix(N, std::vector<int>(N));
  ComputeDistanceMatrix(N, H, distanceMatrix);
  
  for (int j = 0; j < Q; ++j) {
    long long minSize = LLONG_MAX;
    for (int candidateIdx = L[j]; candidateIdx <= R[j]; ++candidateIdx)
    {
      long long curCost = minCostForCandidateIdx(H, L[j], R[j], candidateIdx, distanceMatrix);
      minSize = min(minSize, curCost);
    }
    C[j] = minSize;
  }
  return C;
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40