제출 #416966

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
416966		DEQK	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	66 ms	5596 KiB

molecules

#include <molecules.h>
#include <bits/stdc++.h>
 
#define ll long long
using namespace std;
const int N = 100100;
 
vector<int> find_subset(int l,int u, vector<int> w) {
	vector<int> res;
	vector<ll> pref = {0};
	int n = w.size();
	vector<pair<int, int>> a(n);
	for(int i = 0; i < n; i++) {
		a[i] = {w[i], i};
	}
	sort(a.begin(), a.end());
	for(int i = 0; i < n; i++) {
		pref.push_back(pref.back() + a[i].first);
	}
	int ans = -1;
	for(int i = 0; i < n; i++) {
		int j = lower_bound(pref.begin(), pref.end(), pref[i] + l) - pref.begin();
		if(j < pref.size() && pref[j] - pref[i] <= u) {
			int p = 0;
			for(i++; i <= j; i++) {
				res.push_back(a[i - 1].second);	
			}
			break;
		}
	}
	return res;
}

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:23:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |   if(j < pref.size() && pref[j] - pref[i] <= u) {
      |      ~~^~~~~~~~~~~~~
molecules.cpp:24:8: warning: unused variable 'p' [-Wunused-variable]
   24 |    int p = 0;
      |        ^
molecules.cpp:20:6: warning: unused variable 'ans' [-Wunused-variable]
   20 |  int ans = -1;
      |      ^~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31