제출 #843204

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
843204		Mr_Husanboy	Detecting Molecules (IOI16_molecules)	C++17	컴파일 에러	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
#include "molecules.h"

using namespace std;

template<typename T>
int len(T &a){return a.size();}

vector<int> find_subset(int l, int u, vector<int> w) {
    int n = len(w);

    vector<int> dp(u + 1);
    dp[0] = 1; 

    vector<int> par(u + 1);
    

    for(int i = 0; i < n; i ++){
        for(int j = u; j >= w[i]; j --){
            if(!dp[j] && dp[j - w[i]]){
                par[j] = i;
                dp[j] = 1;
            }
        }
    }
    int yes = -1;
    for(int i = l; i <= u; i ++) if(dp[i]) yes = i;
    if(yes == -1) return {};
    vector<int> ans;
    while(yes != 0){
        ans.push_back(par[yes]);
        yes -= w[par[yes]];
    }
    reverse(all(ans));

    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:34:13: error: 'all' was not declared in this scope; did you mean 'std::filesystem::perms::all'?
   34 |     reverse(all(ans));
      |             ^~~
      |             std::filesystem::perms::all
In file included from /usr/include/c++/10/filesystem:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:129,
                 from molecules.cpp:1:
/usr/include/c++/10/bits/fs_fwd.h:148:7: note: 'std::filesystem::perms::all' declared here
  148 |       all  =  0777,
      |       ^~~