Submission #1147636

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147636		gulmix	Detecting Molecules (IOI16_molecules)	C++20	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
using ll = long long;
#define all(x) x.begin(), x.end()
#define oset tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update>

vector<int> find_subset(int l, int r, vector<int> &w){
    vector<pair<int, int>> a(w.size());
    for(int i = 0; i < w.size(); i++){
        a[i] = {w[i], i+1};
    }
    sort(all(w));
    vector<int> ans;
    int cur = 0, lx = 0, rx = 0;
    while(lx < (int)w.size() && rx < (int)w.size()){
        if(cur < l){
            cur += a[lx].first;
            ans.push_back(a[lx].second);
            lx++;
        }else if(cur >= l && cur < r){
            return ans;
        }else if(cur >= r){
            cur -= a[rx].first;
            rx++;
            ans.erase(ans.begin());
        }
    }
    return {};
}

//int main(){
//    ios::sync_with_stdio(false);
//    cin.tie(0);
//    //ifstream cin("cycle2.in");
//    //ofstream cout("cycle2.out");
//    vector<int> b = {15, 17, 16, 18};
//    vector<int> a = find_subset(10, 20, b);
//    for(auto &i: a)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/ccsZ2BpS.o: in function `main':
grader.cpp:(.text.startup+0x173): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status