Submission #984774

#	Time	Username	Problem	Language	Result	Execution time	Memory
984774		hashim	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define pb push_back
#define pf push_front
#define ep emplace_back
#define ef emplace_front
#define int long long
#define ld long double
#define stoi stoll
#define all(ls) ls.begin(),ls.end()
#define allr(ls) ls.rbegin(),ls.rend()
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
 
using namespace std; 
using namespace __gnu_pbds;
 
template<typename type>using ordered_set=tree<type,null_type,less<type>,rb_tree_tag,tree_order_statistics_node_update>;
template<typename type>using ordered_multiset=tree<type,null_type,less_equal<type>,rb_tree_tag,tree_order_statistics_node_update>;
 
int sum(int ls[],int n){int sum=0;for(int i=0;i<n;i++)sum+=ls[i];return sum;}
 
int count(string str,string word){regex regex_word(word);sregex_iterator it(all(str),regex_word);sregex_iterator end;int count=0;while(it!=end){count++;it++;}return count;}

vector<int>find_subset(int l,int r,vector<int>ls){
  int n=ls.size();
  int prefix[n];
  prefix[0]=ls[0];
  vector<int>ans={};
  for(int i=1;i<n;i++)
    prefix[i]=prefix[i-1]+ls[i];
  cout<<endl;
  for(int i=0;i<n;i++){
    int low=i+1,high=n-1;
    while(low<=high){
      int mid=(low+high)/2;
      if((prefix[mid]-prefix[i])>=l and (prefix[mid]-prefix[i])<=r){
        if(i+1==mid) ans={i+1};
        else ans={i+1,mid};
        return ans;
      }
      else if((prefix[mid]-prefix[i])<l) low=mid+1;
      else high=mid-1;
    }
  }
  return ans;
}

// void solve(){
//   for(auto i:find_subset(15, 17, {6, 8, 8, 7})) cout<<i<<" ";
//   cout<<endl;
// }

// signed main(){
//   ios_base::sync_with_stdio(0);
//   cin.tie(nullptr); 
//   cout.tie(nullptr);
//   int t=1;
//   //cin>>t;
//   while(t--)
//     solve();
// }

Compilation message (stderr)

/usr/bin/ld: /tmp/cc2oZtaR.o: in function `main':
grader.cpp:(.text.startup+0x18d): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status