Submission #972449

#	Time	Username	Problem	Language	Result	Execution time	Memory
972449		vjudge1	Detecting Molecules (IOI16_molecules)	C++11	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
//#define int long long
#define double long double
#define pon ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);  int T=1;
#define ponchik signed main
#define pb push_back
#define pf push_front
#define endl "\n"
#define F first
#define S second

const long long N=1e5+69,INF=1e18+1488;

vector<int> find_subset(int l, int u, vector<int> w) 
//int main()
{
	long long n=w.size(),a=l,b=u;
	vector <pair<long long,long long>> w1;
//	vector <long long> w;
//	for (int i=0; i<n; i++)
//	{
//		int x; cin>>x;
//		w.pb(x);
//	}
	for (int i=0; i<n; i++)
	{
//		int x; cin>>x;
		int x=w[i];
		w1.pb({x,i});
	}
	sort(w1.begin(),w1.end());
	long long l1=0,r=0,sum=w[0];
	vector <int> ans;
	while (l1<=r&&l1<n)
	{
		if (sum>=a&&sum<=b)
		{
			for (int i=l1; i<=r; i++) ans.pb(w1[i].S);
			break;
		}
		if (sum<a) r++,sum+=w1[r].F;
		else if (sum>b) l1++,sum-=w[l1-1].F;
		
	}
	return ans;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:11:11: error: request for member 'first' in 'w.std::vector<int>::operator[](((std::vector<int>::size_type)(l1 - 1)))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'}
   11 | #define F first
      |           ^~~~~
molecules.cpp:44:37: note: in expansion of macro 'F'
   44 |   else if (sum>b) l1++,sum-=w[l1-1].F;
      |                                     ^