Submission #853864

#	Time	Username	Problem	Language	Result	Execution time	Memory
853864		thinknoexit	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	38 ms	6296 KiB

molecules

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

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = w.size();
    vector<pair<int, int>> v;
    for (int i = 0;i < n;i++) {
        v.push_back({ w[i], i });
    }
    sort(v.begin(), v.end());
    ll sum = 0;
    int pl = 0, pr = 0;
    while (pr < n && sum < l) {
        sum += v[pr++].first;
        while (sum > u) {
            sum -= v[pl++].first;
        }
        if (l <= sum && sum <= u) {
            break;
        }
    }
    while (pl < n && sum > u) {
        sum -= v[pl++].first;
    }
    vector<int> ans;
    if (l <= sum && sum <= u) {
        for (int i = pl;i < pr;i++) {
            ans.push_back(v[i].second);
        }
    }
    return ans;
}

// int main() {
//     int l, u, n;
//     cin >> n >> l >> u;
//     vector<int> w(n);
//     for (auto& x : w) cin >> x;
//     vector<int> ans = find_subset(l, u, w);
//     for (auto& x : ans) {
//         cout << x << ' ';
//     }
// }

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