Submission #469213

#	Time	Username	Problem	Language	Result	Execution time	Memory
469213		flashmt	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	70 ms	6308 KiB

molecules

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

vector<int> find_subset(int l, int u, vector<int> w)
{
  int n = size(w);
  vector<long long> s(n + 1);
  vector<int> id(n);
  iota(begin(id), end(id), 0);
  sort(begin(id), end(id), [&](int u, int v) { return w[u] < w[v]; });
  for (int i = 0; i < n; i++)
    s[i + 1] = s[i] + w[id[i]];

  for (int k = 1; k <= n; k++)
  {
    if (s[k] > u || s[n] - s[n - k] < l)
      continue;
    for (int i = k; i <= n; i++)
      if (l <= s[i] - s[i - k] && s[i] - s[i - k] <= u)
      {
        vector<int> ans;
        for (int j = i - k; j < i; j++)
          ans.push_back(id[j]);
        sort(begin(ans), end(ans));
        return ans;
      }
  }

  return {};
}

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