Submission #239558

#	Time	Username	Problem	Language	Result	Execution time	Memory
239558		nicolaalexandra	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	103 ms	13688 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
#define DIM 200010
using namespace std;

multiset <pair<int,int> > s;
vector <int> sol;
pair <int,int> v[DIM];
int i,k;

vector <int> find_subset (int l, int r, vector <int> w){

    for (i=0;i<w.size();i++)
        v[++k] = make_pair(w[i],i);

    sort (v+1,v+k+1);

    long long sum = 0;
    for (i=1;i<=k;i++){
        if (sum + v[i].first < l){
            sum += v[i].first;
            s.insert(make_pair(v[i].first,v[i].second));
            continue;
        }

        if (sum + v[i].first >= l && sum + v[i].first <= r){
            sum += v[i].first;
            s.insert(make_pair(v[i].first,v[i].second));
            break;
        }

        /// sum + v[i].first > r
        s.insert(make_pair(v[i].first,v[i].second));
        sum += v[i].first;

        int val = sum - r;
        multiset <pair<int,int> > :: iterator it = s.lower_bound(make_pair(val,0));

        sum -= it->first;
        s.erase(it);

        if (sum >= l && sum <= r)
            break;
    }

    if (sum >= l && sum <= r){
        for (auto it : s)
            sol.push_back(it.second);
        sort (sol.begin(),sol.end());
    }

    return sol;

}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:13:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (i=0;i<w.size();i++)
              ~^~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31