제출 #321818

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
321818		nikatamliani	Detecting Molecules (IOI16_molecules)	C++14	컴파일 에러	0 ms	0 KiB

molecules

#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> find_subset(int l, int u, vector<int>w) {
	int n = w.size();
    vector<int> indices(n);
    for(int i = 0; i < n; ++i) {
        indices[i] = i; 
    }
    sort(indices.begin(), indices.end(), [&](int x, int y) {
        return w[x] > w[y];
    });
    #define ll long long
    vector<int> result;
    ll sum = 0, save = 0;
    for(int i = 0; i < n; ++i) {
        int index = indices[i]; 
        sum += w[index];
        result.push_back(index);
        ++cnt;
        if(sum >= l) {
            save = i + 1;
            break;
        }
    }
    int ptr = 0; 
    while(save < n && sum > u && ptr < result.size()) {
        sum -= w[result[ptr]];
        result[ptr] = indices[save++];
        sum += w[result[ptr++]];
    }
    if(sum <= u) {
        assert(sum >= l);
        return result;
    } 
    return vector<int>{};
}

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:20:11: error: 'cnt' was not declared in this scope; did you mean 'int'?
   20 |         ++cnt;
      |           ^~~
      |           int
molecules.cpp:27:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     while(save < n && sum > u && ptr < result.size()) {
      |                                  ~~~~^~~~~~~~~~~~~~~