Submission #348976

#	Time	Username	Problem	Language	Result	Execution time	Memory
348976		Iwanttobreakfree	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include "molecules.h"
using namespace std;
vector <int> find_subset(int l,int u,vector <int>& w ){
	vector <int> res;
	int suma,contador;
	for(int a=0;a<w.size();a++){
		if(w[a]<=u&&w[a]>=l){
			res[0]=w[a];
			return res;
		}
		else if(w[a]>u) w.erase(w.begin()+a);
	}
	sort(w.rbegin(),w.rend());
	while (suma<l||suma>u){
		if(suma<l) {
			suma+=w[contador];
			res[contador]=w[contador],contador++;
		}
		else if(suma>u) {
		suma-=w[contador];
		res.erase(res.begin()+contador),contador--;
	}
	}
	return res;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>&)':
molecules.cpp:11:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int a=0;a<w.size();a++){
      |              ~^~~~~~~~~
molecules.cpp:21:20: warning: 'contador' may be used uninitialized in this function [-Wmaybe-uninitialized]
   21 |    suma+=w[contador];
      |                    ^
molecules.cpp:25:7: warning: 'suma' may be used uninitialized in this function [-Wmaybe-uninitialized]
   25 |   suma-=w[contador];
/tmp/ccLwbint.o: In function `main':
grader.cpp:(.text.startup+0x139): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status