Submission #1307718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1307718		ayaz	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
using namespace std;

#define isz(x) (int)x.size()
#define all(x) (x).begin(),(x).end()

using vi = vector<int>;
using ll = long long;
using pii = pair<int, int>;
vi find_subset(int l, int r, vi w) {
  int n = isz(w);
  vector<array<int, 2>> a(n);
  for (int i = 0; i < n; i++) a[i] = {w[i], i};
  sort(all(a));
  for (int i = 0; i < n; i++) {
    int cur = 0;
    vi idx;
    for (int j = i; j < n; j++) {
      if (cur + a[j][0] <= r) {
        idx.push_back(a[j][1]);
        cur += a[j][0];
      } else {
        break;
      }
    }
    if (l <= cur && cur <= r) {
      return idx;
    }
  }
  return {};
}
int main() {
  int n, l, u;
  assert(3 == scanf("%d %d %d", &n, &l, &u));
  vi w(n);
  for (int i = 0; i < n; i++)
    assert(1 == scanf("%d", &w[i]));
  vi result = find_subset(l, u, w);
    
  printf("%d\n", (int)result.size());
  for (int i = 0; i < (int)result.size(); i++)
    printf("%d%c", result[i], " \n"[i == (int)result.size() - 1]);
}

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/ccO1xTrR.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccXgCXXN.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status