제출 #706458

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
706458		finn__	Detecting Molecules (IOI16_molecules)	C++17	100 / 100	55 ms	6208 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;

vector<int> find_subset(int l, int u, vector<int> w)
{
    vector<pair<int, int>> y;
    for (int i = 0; i < w.size(); i++)
        y.emplace_back(w[i], i);
    sort(y.begin(), y.end());
    sort(w.begin(), w.end());
    auto it = w.begin(), jt = w.begin();
    long long x = 0;

    while (1)
    {
        if (x < l)
        {
            if (jt == w.end())
                return {};
            x += *jt++;
        }
        else if (x > u)
            x -= *it++;
        else
        {
            vector<int> ans;
            for (size_t i = it - w.begin(); i < jt - w.begin(); i++)
                ans.push_back(y[i].second);
            return ans;
        }
    }

    return {};
}

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < w.size(); i++)
      |                     ~~^~~~~~~~~~
molecules.cpp:28:47: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and '__gnu_cxx::__normal_iterator<int*, std::vector<int> >::difference_type' {aka 'long int'} [-Wsign-compare]
   28 |             for (size_t i = it - w.begin(); i < jt - w.begin(); i++)
      |                                             ~~^~~~~~~~~~~~~~~~

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