Submission #491942

#	Time	Username	Problem	Language	Result	Execution time	Memory
491942		Virv	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	332 KiB

molecules

#include <algorithm>
#include <cstdint>
#include <vector>

#include "molecules.h"

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	sort(w.begin(), w.end());

	uint32_t		 T{};
	std::vector<int> S{};

	size_t i{};
	while (i < w.size() && T + w[i] <= u) {
		T += w[i];
		S.push_back(i);
		++i;
	}

	while (i < w.size() && T < l) {
		T += w[i] - w[S[i % S.size()]];
		S[i % S.size()] = i;
		++i;
	}

	return l <= T && T <= u ? S : std::vector<int>{};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:14:34: warning: comparison of integer expressions of different signedness: 'uint32_t' {aka 'unsigned int'} and 'int' [-Wsign-compare]
   14 |  while (i < w.size() && T + w[i] <= u) {
      |                         ~~~~~~~~~^~~~
molecules.cpp:20:27: warning: comparison of integer expressions of different signedness: 'uint32_t' {aka 'unsigned int'} and 'int' [-Wsign-compare]
   20 |  while (i < w.size() && T < l) {
      |                         ~~^~~
molecules.cpp:26:11: warning: comparison of integer expressions of different signedness: 'int' and 'uint32_t' {aka 'unsigned int'} [-Wsign-compare]
   26 |  return l <= T && T <= u ? S : std::vector<int>{};
      |         ~~^~~~
molecules.cpp:26:21: warning: comparison of integer expressions of different signedness: 'uint32_t' {aka 'unsigned int'} and 'int' [-Wsign-compare]
   26 |  return l <= T && T <= u ? S : std::vector<int>{};
      |                   ~~^~~~

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