Submission #209230

#	Time	Username	Problem	Language	Result	Execution time	Memory
209230		my99n	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	67 ms	5628 KiB

molecules

#include<bits/stdc++.h>
using namespace std;

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    vector<pair<int,int>> s(n);
    for (int i = 0; i < n; i++) s[i] = {w[i], i};
    sort(s.begin(), s.end());
    int a = 0, b = -1;
    long long sum = 0;
    deque<int> ans;
    while (1) {
        // cerr << a << ' ' << b << ' ' << sum << endl;
        if (a < b and sum > u) sum -= s[a++].first, ans.pop_front();
        else if (b < (n-1) and sum < l) sum += s[++b].first, ans.push_back(s[b].second);
        else if (l <= sum and sum <= u) return (vector<int>){ans.begin(), ans.end()};
        else break;
    }
    return vector<int>(0);
}

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