Submission #632246

#	Time	Username	Problem	Language	Result	Execution time	Memory
632246		device	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
#define pb push_back
#define ff first
#define ss second
using namespace std;
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	int n = w.size();
	vector<pair<int,int>> v(n);
	for(int i = 0; i < n; i++){
		cin >> v[i].ff;
		v[i].ss = i;
	}
	sort(v.begin(), v.end());
	int cur = v[0].ff;
	int ptr = 0;
	if(cur >= l && cur <= u){
		std::vector<int>(v[0].ss);
		return;
	}
	for(int i = 1; i < n; i++){
		cur += v[i].ff;
		if(cur >= l && cur <= u){
			vector<int> ret;
			for(int j = ptr; j <= i; j++){
				ret.pb(v[j].ss);
			}
			return ret;
		}
		while(cur > u && ptr <= i){
			cur -= v[ptr].ff;
			ptr++;
		}
		if(cur >= l && cur <= u){
			vector<int> ret;
			for(int j = ptr; j <= i; j++){
				ret.pb(v[j].ss);
			}
			return ret;
		}
	}
    return std::vector<int>(0);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:19:3: error: return-statement with no value, in function returning 'std::vector<int>' [-fpermissive]
   19 |   return;
      |   ^~~~~~