Submission #1319306

#	Time	Username	Problem	Language	Result	Execution time	Memory
1319306		yessimkhan	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
#pragma once
// solved by bekagg
#define int long long
#define ent '\n'
#define pb push_back
#define all(x) x.begin(),x.end()
#define PRaim_bek_abi ios_base::sync_with_stdio(0);cin.tie(0);

using namespace std;

const int N = 2e5+5;
const int MOD = 1e9+7;

int pref[N];

vector<int> find_subset(int l, int u, vector<int> w){

    vector<pair<int , int> > v;
    vector<int>ans;

    for (int i = 0; i < w.size(); i++){
        v.pb({w[i] , i});
    }

    sort(all(v));
    for (int i = 0; i < w.size(); i++) pref[i] = pref[i - 1] + v[i].first;

    for (int i = 0; i < w.size(); i++){
        int l = i , r = w.size() , p = -1;
        while(l <= r){
            int m = (l + r) / 2;

            if (pref[m] - pref[i - 1] >= l){
                p = m;
                r = m - 1;
            }
            else l = m + 1;
        }

        if (p != -1 and pref[p] - pref[i - 1] <= u){
            for (int j = i; j <= p; j++){
                ans.pb(v[j].second);
            }
            break;
        }
    }

    return ans;

}

Compilation message (stderr)

molecules.cpp:3:9: warning: #pragma once in main file
    3 | #pragma once
      |         ^~~~
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/ccRv0wM0.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