Submission #138284

#	Time	Username	Problem	Language	Result	Execution time	Memory
138284		arthurconmy	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
#ifndef ARTHUR_LOCAL
	#include "molecules.h"
#endif
using namespace std;

vector<int> find_subset(int l, int u, vector<int> W) 
{
    vector<int> use;
    int cur = 0;

    for(int i=0; i<W.size(); i++)
    {	
    	int w = W[i];

    	if(w>=l && w<=u)
    	{
    		return {w};
    	}

    	if(w<l)
    	{
    		use.push_back(i);
    		cur += w;
    		if(cur > u) break;
    	}
    }

    while(cur>u)
    {
    	if(use.empty()) return {};

    	cur -= W[use.back()];
    	use.pop_back();
    }

    if(use.empty() || !(cur>=l) || !(cur<=r)) return {};
    else return use;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:12:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<W.size(); i++)
                  ~^~~~~~~~~
molecules.cpp:37:43: error: 'r' was not declared in this scope
     if(use.empty() || !(cur>=l) || !(cur<=r)) return {};
                                           ^
molecules.cpp:39:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^