Submission #1000365

#	Time	Username	Problem	Language	Result	Execution time	Memory
1000365		Gray	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include <algorithm>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <stack>
#include <vector>

#define ll long long
#define ld double
#define ff first
#define ss second
#define ln "\n"
using namespace std;
const ll MOD = (ll)1e9+7;
const ll INF = 2e18;

vector<int> find_subset(int d, int u, vector<int> &w){
	ll n = w.size();
	vector<pair<ll, ll>> iw(n);
	for (ll i=0; i<n; i++) iw[i] = {w[i], i};
	sort(iw.begin(), iw.end());
	ll l=0, r=0;
	ll sum=iw[0].ff;
	while (r<n){
		if (sum<=u){
			if (sum>=d){
				vector<int> ans;
				ll rsum=0;
				for (ll i=l; i<=r; i++){
					rsum+=iw[i].ff;
					ans.push_back(iw[i].ss);
				}
				assert(rsum<=u and rsum>=d);
				return ans;
			}else{
				r++;
				sum+=iw[r].ff;
			}
		}else{
			sum-=iw[l].ff;
			l++;
		}
	}
	return {};
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccB75AmS.o: in function `main':
grader.cpp:(.text.startup+0x18d): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status