Submission #104813

#	Time	Username	Problem	Language	Result	Execution time	Memory
104813		daili	Job Scheduling (CEOI12_jobs)	C++14	0 / 100	303 ms	20052 KiB

jobs

#include <bits/stdc++.h>

using namespace std;

bool check(vector<pair<int,int>> &allJobs, int currNr, int delay, int days)
{
    vector<int> busy(days+1);
    for (int i = 0; i < allJobs.size(); i++)
    {
        int day = allJobs[i].first;
        while(busy[day] >= currNr)
        {
            day++;
        }
        if (allJobs[i].second + delay < day)
        {
          return false;
        }
        else
        {
            busy[day]++;
        }
    }
    return true;
}

void print(vector<pair<int,int>> &allJobs, int days, int nr)
{
  vector<vector<int>> busy(days+1);
  for (int i = 0; i < allJobs.size(); i++)
  {
      int day = allJobs[i].first;
      while(busy[day].size() >= nr)
      {
          day++;
      }
      busy[day].push_back(allJobs[i].second);
  }
  for (int i = 1; i <= days; i++)
  {
    for (auto j: busy[i])
    {
      cout << j << " ";
    }
    cout << 0 << "\n";
  }
}



int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, d, m;
    cin >> n >> d >> m;

    vector<pair<int,int>> allJobs;
    for (int i = 0; i < m; i++)
    {
        int x;
        cin >> x;
        allJobs.push_back({x, i+1});
    }
    sort(allJobs.begin(), allJobs.end());

    int left = 1;
    int right = m;

    while(left <= right)
    {
        int mid = (left + right) >> 1;

        if (check(allJobs, mid, d, n))
        {
            right = mid - 1;
        }
        else
        {
            left = mid + 1;
        }
    }
    if (check(allJobs, (left+right) >> 1, d, n))
    {
      cout << ((left+right) >> 1) << "\n";
      print(allJobs, n, (left+right) >> 1);
    }
    else
    {
        cout << ((left + right) >> 1) + 1 << "\n";
        print(allJobs, n, ((left+right) >> 1) + 1);
    }
}

Compilation message (stderr)

jobs.cpp: In function 'bool check(std::vector<std::pair<int, int> >&, int, int, int)':
jobs.cpp:8:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < allJobs.size(); i++)
                     ~~^~~~~~~~~~~~~~~~
jobs.cpp: In function 'void print(std::vector<std::pair<int, int> >&, int, int)':
jobs.cpp:30:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < allJobs.size(); i++)
                   ~~^~~~~~~~~~~~~~~~
jobs.cpp:33:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       while(busy[day].size() >= nr)
             ~~~~~~~~~~~~~~~~~^~~~~

• Subtask 1: 0 / 100