Submission #499601

#	Time	Username	Problem	Language	Result	Execution time	Memory
499601		Shreyan_Paliwal	Job Scheduling (CEOI12_jobs)	C++17	55 / 100	529 ms	13684 KiB

jobs

#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;

vector<pair<int, int>> jobs;
int                    n, d, m;

bool works(int mid) {
  int counter = 0;
  int day     = 1;
  for (int i = 0; i < jobs.size(); i++) {
    if (day <= jobs[i].first + d) {
      counter = (counter + 1) % mid;
      if (counter == 0) day++;
    } else {
      return false;
    }
  }

  return true;
}

int main() {
  // freopen("jobscheduling.in", "r", stdin);

  cin >> n >> d >> m;

  jobs = vector<pair<int, int>>(m);
  for (int i = 0; i < m; i++) {
    cin >> jobs[i].first;
    jobs[i].second = i;
  }

  sort(jobs.begin(), jobs.end());

  int lo = 1;
  int hi = 1000000;
  while (lo != hi) {
    int mid = (lo + hi) / 2;
    if (works(mid)) {
      hi = mid;
    } else {
      lo = mid + 1;
    }
  }

  cout << lo << endl;

  int counter = 0;
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < lo; j++) {
      if (counter < jobs.size())
        cout << jobs[counter++].second + 1 << " ";
      else
        break;
    }
    cout << 0 << endl;
  }

  return 0;
}

Compilation message (stderr)

jobs.cpp: In function 'bool works(int)':
jobs.cpp:13:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |   for (int i = 0; i < jobs.size(); i++) {
      |                   ~~^~~~~~~~~~~~~
jobs.cpp: In function 'int main()':
jobs.cpp:54:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |       if (counter < jobs.size())
      |           ~~~~~~~~^~~~~~~~~~~~~

• Subtask 1: 55 / 100