Submission #297152

#	Time	Username	Problem	Language	Result	Execution time	Memory
297152		Harry464	Hiring (IOI09_hiring)	C++14	100 / 100	1035 ms	32600 KiB

hiring

#include <iostream>
#include <vector>
#include <cmath>
#include <queue>
#include <algorithm>

using namespace std;

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  int n;
  double w;
  cin >> n >> w;
  vector <pair<pair<double,int>,pair<double,double>>> c(n);
  for (int i = 0; i < n; i++){
    double p, q;
    cin >> p >> q;
    c[i] = make_pair(make_pair(p/q,i+1),make_pair(p,q));
  }
  sort(c.begin(),c.end());
  double totq = 0;
  priority_queue<double> kju;
  int najs = 0, ind;
  double najcijena = 1000000000;
  for (int i = 0; i < n; i++){
    kju.push(c[i].second.second);
    totq += c[i].second.second;
    double gran = w / c[i].first.first;
    while (totq > gran){
      totq -= kju.top();
      kju.pop();
    }
    double cijena = totq*c[i].first.first;
    if (kju.size() > najs || (kju.size() == najs && najcijena > cijena)){
      najs = kju.size();
      ind = i;
      najcijena = cijena;
    }
  }
  totq = 0;
  priority_queue<pair<double,int>> kju2;
  for (int i = 0; i <= ind; i++){
    kju2.push(make_pair(c[i].second.second,c[i].first.second));
    totq += c[i].second.second;
  }
  double gran = w / c[ind].first.first;
  while (totq > gran){
    totq -= kju2.top().first;
    kju2.pop();
  }
  cout << kju2.size() << endl;
  vector <int> rjesenje;
  while (!kju2.empty()){
    rjesenje.push_back(kju2.top().second);
    kju2.pop();
  }
  sort(rjesenje.begin(),rjesenje.end());
  for (int i = 0; i < rjesenje.size(); i++)
    cout << rjesenje[i] << endl;
}

Compilation message (stderr)

hiring.cpp: In function 'int main()':
hiring.cpp:35:20: warning: comparison of integer expressions of different signedness: 'std::priority_queue<double>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |     if (kju.size() > najs || (kju.size() == najs && najcijena > cijena)){
      |         ~~~~~~~~~~~^~~~~~
hiring.cpp:35:42: warning: comparison of integer expressions of different signedness: 'std::priority_queue<double>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   35 |     if (kju.size() > najs || (kju.size() == najs && najcijena > cijena)){
      |                               ~~~~~~~~~~~^~~~~~~
hiring.cpp:59:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |   for (int i = 0; i < rjesenje.size(); i++)
      |                   ~~^~~~~~~~~~~~~~~~~
hiring.cpp:43:21: warning: 'ind' may be used uninitialized in this function [-Wmaybe-uninitialized]
   43 |   for (int i = 0; i <= ind; i++){
      |                   ~~^~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 28 / 28
• Subtask 3: 6 / 6
• Subtask 4: 6 / 6
• Subtask 5: 6 / 6
• Subtask 6: 6 / 6
• Subtask 7: 6 / 6
• Subtask 8: 6 / 6
• Subtask 9: 6 / 6