Submission #900092

#	Time	Username	Problem	Language	Result	Execution time	Memory
900092		mannshah1211	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	1 ms	684 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	  int sum = 0;
	  for (int i = 0; i < w.size(); i++) {
	  	sum += w[i];
	  }
	  if (sum < l) {
	  	return {};
	  }
    std::vector<std::pair<int, int>> indices;
    for (int i = 0; i < w.size(); i++) {
    	indices.push_back(std::make_pair(w[i], i));
    }
    if (indices[0].first > u) {
    	return {};
    }
    std::sort(indices.begin(), indices.end());
    int cursum = 0, longest = 0;
    for (int i = 0; i < indices.size(); i++) {
    	cursum += indices[i].first;
    	if (cursum >= l) {
    		cursum -= indices[i].first, longest = i;
    		break;
    	}
    }
    for (int i = longest; i < indices.size(); i++) {
    	cursum += indices[i].first;
    	cursum -= indices[i - longest].first;
    	if (cursum >= l && cursum <= u) {
    		std::vector<int> answer;
    		for (int j = i; j >= i - longest + 1; j--) {
    			answer.push_back(indices[j].second);
    		}
    		return answer;
    	}
    }
    return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:6:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |    for (int i = 0; i < w.size(); i++) {
      |                    ~~^~~~~~~~~~
molecules.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i = 0; i < w.size(); i++) {
      |                     ~~^~~~~~~~~~
molecules.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for (int i = 0; i < indices.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~~
molecules.cpp:28:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for (int i = longest; i < indices.size(); i++) {
      |                           ~~^~~~~~~~~~~~~~~~

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