Submission #900089

#	Time	Username	Problem	Language	Result	Execution time	Memory
900089		mannshah1211	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	  if (std::accumulate(w.begin(), w.end(), 0LL) < 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 {};
    }
    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:4:13: error: 'accumulate' is not a member of 'std'
    4 |    if (std::accumulate(w.begin(), w.end(), 0LL) < l) {
      |             ^~~~~~~~~~
molecules.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < w.size(); i++) {
      |                     ~~^~~~~~~~~~
molecules.cpp:14:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   14 |     sort(indices.begin(), indices.end());
      |     ^~~~
      |     short
molecules.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for (int i = 0; i < indices.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~~
molecules.cpp:23:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = longest; i < indices.size(); i++) {
      |                           ~~^~~~~~~~~~~~~~~~