Submission #1302115

#	Time	Username	Problem	Language	Result	Execution time	Memory
1302115		lunarecho	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
vector<int> find_subset(ll lower, ll upper, vector<ll> weights) {
    int n = weights.size();
    vector<pair<ll,int>> p(n); 
    for(int i=0;i<n;++i) {
        p[i] = {weights[i], i};
    }
    sort(p.begin(), p.end());
    bool f = false;
    int l = 0, r = 0;
    ll s = 0;
    while(r < n) {
        s += p[r].first;
        while(s > upper) {
            s -= p[l].first;
            ++l;
        }
        if(lower <= s && s <= upper) {
            f = true;
            break;
        }
        ++r;
    }
    vector<int> ans;
    for(int i=l;i<=r;++i) {
        ans.push_back(p[i].second);
    }
    sort(ans.begin(), ans.end());
    return ans;
}

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/ccy7HXmM.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