제출 #779386

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
779386		JoenPoenMan	Detecting Molecules (IOI16_molecules)	C++17	컴파일 에러	0 ms	0 KiB

molecules

#include "grader.cpp"

#include "molecules.h"
#include <bits/stdc++.h>
 
using namespace std;
#define fullVec(arr) arr.begin(), arr.end()

typedef pair<int, int> ii;

std::vector<int> find_subset(int l, int u, std::vector<int> w) {
    vector<int> subset;
    vector<ii> sw;
    for (int i = 0; i < w.size(); i++) {
        sw.push_back({w[i], i});
    }
    sort(fullVec(sw));
    int sum = 0;
    for (int i = sw.size()-1; i >= 0; i--) {
        if (u-sw[i].first >= sw[0].first) {
            subset.push_back(sw[i].second);
            sum += sw[i].first;
            if (sum >= l) return subset;
        }
    }
 
    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:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for (int i = 0; i < w.size(); i++) {
      |                     ~~^~~~~~~~~~
/usr/bin/ld: /tmp/ccoq5UC8.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc7sG56a.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status