제출 #112333

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
112333		ioilolcom	Detecting Molecules (IOI16_molecules)	C++14	컴파일 에러	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define ll long long int
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	vector<pair<int,int> > ww;
	for(int i=0; i<(int)w.size(); i++) {
		ww.push_back({w[i],i});
	}
	sort(ww.begin(),ww.end());
	vector<int> ans;
	int a=0;
	int r=0;
	int n=(int)w.size();
	ll sum=0;
	while(r<n&&a<n) {
		sum+=ww[r].x;
		//cout<<sum<<endl;
		while(sum>u) {
			sum-=w[a].x;
			a++;
		}
		if(sum>=l&&sum<=u) {
			for(int i=a; i<=r; i++) {
				ans.push_back(ww[i].y);
			}
			return ans;
		}
		r++;
	}
	return std::vector<int>(0);
}

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:4:11: error: request for member 'first' in 'w.std::vector<int>::operator[](((std::vector<int>::size_type)a))', which is of non-class type '__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type {aka int}'
 #define x first
           ^
molecules.cpp:22:14: note: in expansion of macro 'x'
    sum-=w[a].x;
              ^