Submission #443859

#	Time	Username	Problem	Language	Result	Execution time	Memory
443859		fuad27	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	56 ms	5316 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> find_subset(int l, int u, vector<int> w) {
	vector<pair<int, int>> k(w.size());
	for(int i = 0;i<w.size();i++) {
		k[i] = make_pair(w[i], i);
	}
	sort(k.begin(), k.end());
	vector<long long> prefix(w.size()+1, 0);
	for(int i = 0;i<w.size();i++) {
		prefix[i+1] = prefix[i] + k[i].first;
	}
	int p1 = 0, p2 = 1;
	while(p2 <= w.size()  and p1 <= w.size()) {
		if(prefix[p2] - prefix[p1] > u) {
			p1++;
		}
		else if(prefix[p2] - prefix[p1] < l) {
			p2++;
		}
		else if(prefix[p2] - prefix[p1] >= l and prefix[p2] - prefix[p1] <= u) {
			vector<int> d;
			for(int i = p1;i<p2;i++) {
				d.push_back(k[i].second);
			}
			return d;
		}
	}
	return {};
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:6:17: 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:11:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i = 0;i<w.size();i++) {
      |                ~^~~~~~~~~
molecules.cpp:15:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  while(p2 <= w.size()  and p1 <= w.size()) {
      |        ~~~^~~~~~~~~~~
molecules.cpp:15:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  while(p2 <= w.size()  and p1 <= w.size()) {
      |                            ~~~^~~~~~~~~~~

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