Submission #582056

#	Time	Username	Problem	Language	Result	Execution time	Memory
582056		Soumya1	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	61 ms	4796 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> find_subset(int l, int u, vector<int> w) {
  vector<int> order(w.size());
  iota(order.begin(), order.end(), 0);
  sort(order.begin(), order.end(), [&](int i, int j) { return w[i] < w[j]; });
  long long cur = 0;
  int ptr = 0;
  for (int i = 0; i < w.size(); i++) {
    while (cur < l && ptr < w.size()) cur += w[order[ptr]], ptr++;
    if (l <= cur && cur <= u) {
      vector<int> ans;
      for (int j = i; j < ptr; j++) ans.push_back(order[j]);
      return ans;
    }
    if (ptr > i) cur -= w[order[i]];
  }
  return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:10:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |   for (int i = 0; i < w.size(); i++) {
      |                   ~~^~~~~~~~~~
molecules.cpp:11:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     while (cur < l && ptr < w.size()) cur += w[order[ptr]], ptr++;
      |                       ~~~~^~~~~~~~~~

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