Submission #93472

#	Time	Username	Problem	Language	Result	Execution time	Memory
93472		tpoppo	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	52 ms	7164 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using pii = pair<ll,int>;

vector<int> res;
vector<pii> v;

vector<int> find_subset(int lw, int u, vector<int> w) {

  v.reserve(w.size());

  for(int i=0;i<w.size();i++){
    v.emplace_back(w[i],i);
  }
  sort(v.begin(),v.end());

  int l = 0;
  ll sum = 0;
  for(int r = 0;r < v.size();r++){
    sum += v[r].first;
    while(sum > u){
      sum -= v[l].first;
      l++;
    }
    //cout<<l<<" - "<<r<<": "<<sum<<endl;
    if(sum >= lw){
      for(int i = l;i<=r;i++) res.push_back(v[i].second);
      return res;
    }
  }
  return vector<int>();
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:15:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<w.size();i++){
               ~^~~~~~~~~
molecules.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int r = 0;r < v.size();r++){
                 ~~^~~~~~~~~~

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