Submission #299412

#	Time	Username	Problem	Language	Result	Execution time	Memory
299412		sandoval	Detecting Molecules (IOI16_molecules)	C++11	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
using ii = pair<int,int>;
using ll = long long;

int find_subset(int l, int u, int w[], int n, int result[]) {
  if (l > u) return 0;

  map<ll,int> m;
  m[0] = 0;
  ll sum = 0;

  for (int i = 1; i <= (int)n; ++i) {
    sum += w[i-1];
    ll k = sum-l;
    auto it = m.upper_bound(k);
    if (it != m.begin()) {
      it = prev(it);
      ll o = sum-it->first;
      assert(o >= l);
      if (o <= u) {
        const int len = i-it->second;
        for (int j = i-len+1, c = 0; j <= i; ++j, ++c) {
          result[c] = j-1;
        }
        return len;
      }
    }
    m[sum] = i;
  }

  return 0;
}

Compilation message (stderr)

/tmp/cceQNqAA.o: In function `main':
grader.cpp:(.text.startup+0x12b): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status