Submission #538718

#	Time	Username	Problem	Language	Result	Execution time	Memory
538718		fabijan_cikac	Hiring (IOI09_hiring)	C++17	50 / 100	897 ms	31808 KiB

hiring

#include <bits/stdc++.h>

using namespace std;

#define F first
#define S second
#define db double
#define pp pair<db, db>
#define ppp pair<db, pp>

int n; db w;
vector<db> sk;
vector<db> q;
vector<pair<db, int> > v;
set<pair<db, int> > s;
int siz = 0;
vector<int> sol;

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

    cin >> n >> w;
    sk.resize(n); q.resize(n);
    for (int i = 0; i < n; ++i){
        cin >> sk[i] >> q[i];
        v.push_back({sk[i] / q[i], i});
    }
    sort(v.begin(), v.end()); db sum = 0;
    for (int i = 0; i < n; ++i){
        s.insert({q[v[i].S], i}); sum += q[v[i].S];
        while (!s.empty() && sum * v[i].F > w){
            auto it = s.end(); --it;
            sum -= (*it).F; s.erase(it);
        }
        siz = max(siz, (int)(s.size()));
    }
    cout << siz << '\n'; s.clear(); sum = 0;
    for (int i = 0; i < n; ++i){
        s.insert({q[v[i].S], i}); sum += q[v[i].S];
        while (!s.empty() && sum * v[i].F > w){
            auto it = s.end(); --it;
            sum -= (*it).F; s.erase(it);
        }
        if (siz == s.size()){
            for (auto x: s)
                sol.push_back(x.S + 1);
            break;
        }
    }
    sort(sol.begin(), sol.end());
    for (int i = 0; i < sol.size(); ++i)
        cout << sol[i] << '\n';

    return 0;
}

Compilation message (stderr)

hiring.cpp: In function 'int main()':
hiring.cpp:45:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::set<std::pair<double, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         if (siz == s.size()){
      |             ~~~~^~~~~~~~~~~
hiring.cpp:52:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |     for (int i = 0; i < sol.size(); ++i)
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 15 / 30
• Subtask 2: 14 / 28
• Subtask 3: 3 / 6
• Subtask 4: 3 / 6
• Subtask 5: 3 / 6
• Subtask 6: 3 / 6
• Subtask 7: 3 / 6
• Subtask 8: 3 / 6
• Subtask 9: 3 / 6