Submission #1287574

#	Time	Username	Problem	Language	Result	Execution time	Memory
1287574		vincentbucourt1	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

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

int N;
vector<pair<ll,int>> molecules; //{val, idx}
ll wOn = 0;
vector<int> ans;

std::vector<int> find_subset(ll wMin, ll wMax, std::vector<ll> w) {
    N = (int)w.size();
    molecules.resize(N);
    for (int i = 0; i < N; i++) {
        molecules[i] = pair<int,int>{w[i], i};
    }
    sort(molecules.begin(), molecules.end());
    int lastUsed = N;
    for (int i = N-1; i >= 0 && wOn < wMin; i--) {
        wOn += molecules[i].first;
        ans.emplace_back(molecules[i].second);
        lastUsed = i;
    }
    if (wMin <= wOn && wOn <= wMax) return ans;
    for (int i = 0; i < min(lastUsed, (int)ans.size()) && wMax < wOn; i++) {
        wOn -= molecules[N-i-1].first;
        wOn += molecules[i].first;
        ans[i] = molecules[i].second;
    }
    if (wMin <= wOn && wOn <= wMax) return ans;
    return vector<int>{};
}

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/ccV8rADi.o: in function `main':
grader.cpp:(.text.startup+0x165): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status