Submission #240244

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
240244	2020-06-19T00:17:39 Z	Amy313	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
std::vector<int> find_subset(int l, int u, std::vector<int> w)
{
    vector<pair<int, int> >M;
    vector<int> A;
    int s = 0, n = w.size(), c;
    for(int i=0; i<w.size(); i++)
    {
        M.push_back(make_pair(w[i], i));
    }
    sort(M.begin(), M.end());
    A.clear();
    if(M[0].first>u)
	{
		return A;
	}
	int p1 = 0; p2 = 0;
	s = M[p2].first;
    for(int i=0; i<n; i++)
    {
        if(s>u)
		{
			s-=M[p1].first;
			s+=M[p2].first;
			p1++;
			p2++;
		}
		else
		{
			if(s>=l and s<=u)
			{
				break;
			}
			else
			{
				s+=M[p2].first;
				p2++;
			}
		}
    }
    if(s>u or s<l)
	{
		return A;
	}
	else
	{
		for(int i=p1; i<p2; i++)
		{
			A.push_back(M[i].second);
		}
		return A;
	}
}

Compilation message

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:9:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0; i<w.size(); i++)
                  ~^~~~~~~~~
molecules.cpp:19:14: error: 'p2' was not declared in this scope
  int p1 = 0; p2 = 0;
              ^~
molecules.cpp:19:14: note: suggested alternative: 'p1'
  int p1 = 0; p2 = 0;
              ^~
              p1
molecules.cpp:8:30: warning: unused variable 'c' [-Wunused-variable]
     int s = 0, n = w.size(), c;
                              ^