Submission #31071

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
31071	2017-08-06 15:11:15	platinant	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	76 ms	5340 KiB

molecules

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#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());
  long long int len=0,sum=0;
  while(len<a.size()&&sum<l){
    sum+=a[len].first;
    len++;
  }
  if(sum<l)return vector<int>(0);
  if(sum<=u){
    for(int i=0;i<len;i++)ret.push_back(a[i].second);
    return ret;
  }
  if(len==1)return vector<int>(0);
  sum -= a[len-1].first;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:11:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<w.size();i++){
               ^
molecules.cpp:18:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(len<a.size()&&sum<l){
           ^
molecules.cpp:32:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(;R<w.size();R++,L++){
        ^

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