Submission #716946

#	Time	Username	Problem	Language	Result	Execution time	Memory
716946		Desh03	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1086 ms	300 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"
using namespace std;
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());
    int sum = 0;
    vector<int> ans;
    for (int i = 0; i < n; i++) {
        if (i < n - 1) {
            if (sum + v[i].first < l && sum + v[i].first + v[i + 1].first > u) {
                continue;
            } else if (sum + v[i].first > u) {
                if (ans.empty()) return ans;
                else {
                    i = ans.back();
                    sum -= w[i];
                    ans.pop_back();
                }
            } else if (sum + v[i].first >= l && sum + v[i].first <= u) {
                ans.push_back(v[i].second);
                return ans;
            } else {
                ans.push_back(v[i].second);
                sum += v[i].first;
            }
        } else {
            if (sum + v[i].first >= l && sum + v[i].first <= u) {
                ans.push_back(v[i].second);
                return ans;
            } else {
                if (ans.empty()) return ans;
                else {
                    i = ans.back();
                    sum -= w[i];
                    ans.pop_back();
                }
            }
        }
    }
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:6:28: warning: control reaches end of non-void function [-Wreturn-type]
    6 |     vector<pair<int, int>> v;
      |                            ^

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31