Submission #1324641

#	Time	Username	Problem	Language	Result	Execution time	Memory
1324641		riafhasan2010	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

vector<int> find_subset(int l, int u, vector<int> w) {
  int n = w.size(), mn = w[0];
  ll sum = 0;
  vector<pair<int, int>> a(n);
  for (int i = 0; i < n; i++) {
    a[i].first = w[i];
    a[i].second = i;

  }
  sort(a.begin(), a.end());
  vector<ll> psum(n + 1); psum[0] = 0;
  for (int i = 0; i < n; i++) {
    sum += a[i].first;
    psum[i + 1] = sum;
  }
  if (sum < l or w[0] > u) return vector<int>(0);
  vector<int> ans;
  for (int i = 1; i <= n; i++) {
    int ind = n, left = 0, right = i;
    while (left <= right) {
      int m = (left + right) / 2;
      if (psum[i] - psum[m] >= l and psum[i] - psum[m] <= u) {
        ind = m + 1;
        break;
      }
      if (psum[i] - psum[m] >= u) right = m - 1;
      else left = m + 1;
    }
    if (ind <= i) {
      for (int j = ind; j <= i; j++) {
        ans.push_back(a[j - 1].second);
      }
      break;
    }
  }
  return ans;
}

int main() {
  auto ans = find_subset(10, 20, {15, 17, 16, 18});
  for (auto i : ans) cout << i << " ";
}

Compilation message (stderr)

molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
/usr/bin/ld: /tmp/ccRA5fsV.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccJW2Sxg.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status