Submission #31062

#	Time	Username	Problem	Language	Result	Execution time	Memory
31062		platinant	Detecting Molecules (IOI16_molecules)	C++14	69 / 100	56 ms	5068 KiB

molecules

#include "molecules.h"
#include <algorithm>
using namespace std;
typedef pair<int,int> pp;

vector<int> find_subset(int l, int u, vector<int> w) {
	
	vector<int> ret;
	vector<pp> a(w.size());
	for(int i=0;i<w.size();i++){
		a[i]=pp(w[i],i);
	}

	sort(a.begin(),a.end());

	int len=0,sum=0;
	while(len<a.size()&&sum<l){
		sum+=a[len].first;
		len++;
	}

	if(sum>=l&&sum<=u){
		for(int i=0;i<len;i++)ret.push_back(a[i].second);
		return ret;
	}


	for(int i=len,j;i<=w.size();i++){
		j=i-len+1;
		sum-=a[j-1].first;
		if(sum>=l){
			for(int k=j;k<i;k++)ret.push_back(a[k].second);
			return ret;
		}
		if(i<w.size())sum+=a[i].first;
	}

    return ret;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:10:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<w.size();i++){
               ^
molecules.cpp:17:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(len<a.size()&&sum<l){
           ^
molecules.cpp:28:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=len,j;i<=w.size();i++){
                   ^
molecules.cpp:35:7: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(i<w.size())sum+=a[i].first;
       ^

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