Submission #23995

#	Time	Username	Problem	Language	Result	Execution time	Memory
23995		gs14004	Detecting Molecules (IOI16_molecules)	C++11	100 / 100	83 ms	5424 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pi;
typedef long long lint;

int n;
pi elem[200005];

vector<int> find_subset(int l, int u, vector<int> w) {
    n = w.size();
    for(int i=0; i<n; i++) elem[i] = pi(w[i], i);
    sort(elem, elem + n);
    lint e = 0, sum = 0;
    for(int i=0; i<n; i++){
        while(e < n && sum < l){
            sum += elem[e++].first;
        }
        if(sum >= l && sum <= u){
            vector<int> r;
            for(int j=i; j<e; j++) r.push_back(elem[j].second);
            sort(r.begin(), r.end());
            return r;
        }
        sum -= elem[i].first;
    }
    return vector<int>();
}

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