Submission #499650

#	Time	Username	Problem	Language	Result	Execution time	Memory
499650		Shreyan_Paliwal	Job Scheduling (CEOI12_jobs)	C++17	100 / 100	567 ms	13636 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 < m; i++) {
  //   if (day <= jobs[i].first + d) {
  //     if (day < jobs[i].first) {
  //       counter = 1 % mid;
  //       day     = jobs[i].first + (counter == 0 ? 1 : 0);
  //     } else {
  //       counter = (counter + 1) % mid;
  //       if (counter == 0) day++;
  //     }
  //   } else {
  //     return false;
  //   }
  // }

  // return (counter == 0 ? day - 1 : day) <= n;
  int counter = mid;
  for (int i = 0; i < m; i++) {
    if ((counter / mid) <= jobs[i].first + d) {
      if ((counter / mid) < jobs[i].first) {
        counter = jobs[i].first * mid + 1;
      } else {
        counter++;
      }
    } else {
      return false;
    }
  }
  counter--;
  return (counter / mid) <= n;
}

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 + 1;
  }

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

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

  return 0;
}

• Subtask 1: 100 / 100