Submission #651341

#	Time	Username	Problem	Language	Result	Execution time	Memory
651341		ayalla	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>
using namespace std;
using namespace __gnu_pbds;

template <class T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

#define int long long int
#define endl '\n'
#define pb push_back
#define pi pair<int, int>
#define pii pair<int, pi>
#define fir first
#define sec second
#define MAXN 500001
#define mod 1000000007

vector<int> find_subset(int l, int u, vector<int> w)
{
  int r = u;
  int n = w.size();
  set<pi> s;
  int sum = 0;
  for (int i = 0; i < n; i++)
  {
    s.insert({w[i], i});
    sum += w[i];
  }
  vector<bool> vis(n, 1);
  while (sum > r)
  {
    int dif = sum - r;
    auto it = s.lower_bound({dif, -1});
    if (it != s.end() && (sum - (*it).fir) >= l && (sum - (*it).fir) <= r)
    {
      pi x = *it;
      sum -= x.fir;
      vis[x.sec] = 0;
      break;
    }
    else
    {
      pi x = *s.begin();
      sum -= x.fir;
      vis[x.sec] = 0;
      s.erase(x);
    }
  }
  if (sum < l)
    return {};
  vector<int> ans;
  for (int i = 0; i < n; i++)
  {
    if (vis[i])
      ans.pb(i);
  }
  return ans;
}
// r + min >= max + l
// r - max >= l - min

Compilation message (stderr)

/usr/bin/ld: /tmp/ccS2dSrJ.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