Submission #568382

#	Time	Username	Problem	Language	Result	Execution time	Memory
568382		Trisanu_Das	Detecting Molecules (IOI16_molecules)	C++17	46 / 100	4 ms	688 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
#define f first
#define s second
using namespace std;

vector<int> find_subset(int l, int r, vector<int> w) {
    vector<pair<int, int>> w_sort;
    for(int i = 0; i < w.size(); i++) {
    	w_sort.push_back({w[i], i});
	}
	sort(w_sort.begin(), w_sort.end());
	int sum = 0;
	vector<int> ans;
	for(int i = 0; i < w_sort.size(); i++) {
		sum += w_sort[i].f;
		ans.push_back(w_sort[i].s);
		if(sum >= l && sum <= r)return ans;
	}
	ans.clear();
	if(sum < l) return ans;
	if(w_sort[0].f > r) return ans;
	
	int last = 0; sum = 0;
	for(int i = 0; i < w_sort.size(); i++) {
		if(sum + w_sort[i].f > l) break;
		sum += w_sort[i].f;
		last = i;
	}
	int len = last + 1; 
	for(int i = last + 1; i < w_sort.size(); i++) {
		sum -= w_sort[i - len].f;
		sum += w_sort[i].f;
		if(sum >= l) {
			for(int j = i - len + 1; j <= i; j++) ans.push_back(w_sort[j].s);
			return ans;
		}
	}
	return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:9:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for(int i = 0; i < w.size(); i++) {
      |                    ~~^~~~~~~~~~
molecules.cpp:15:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for(int i = 0; i < w_sort.size(); i++) {
      |                 ~~^~~~~~~~~~~~~~~
molecules.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |  for(int i = 0; i < w_sort.size(); i++) {
      |                 ~~^~~~~~~~~~~~~~~
molecules.cpp:31:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |  for(int i = last + 1; i < w_sort.size(); i++) {
      |                        ~~^~~~~~~~~~~~~~~

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