Submission #867495

#	Time	Username	Problem	Language	Result	Execution time	Memory
867495		lolismek	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include "molecules.h"

#include <algorithm>
#include <iostream>
#include <queue>
#include <cassert>

using namespace std;

vector<int> find_subset(int l, int u, vector<int> w){
    queue <int> dq;
    long long sum = 0;

    vector <pii> v;
    for(int i = 0; i < (int)w.size(); i++){
        v.push_back({w[i], i});
    }

    sort(w.begin(), w.end());
    sort(v.begin(), v.end());

    for(int i = 0; i < (int)w.size(); i++){
        sum += w[i];
        dq.push(i);

        while(!dq.empty() && sum > u){
            sum -= w[dq.front()];
            dq.pop();
        }

        if(l <= sum && sum <= u){
            vector <int> ans;
            while(!dq.empty()){
                ans.push_back(v[dq.front()].second);
                dq.pop();
            }

            return ans;
        }
    }

    return {};
}

/*
4 15 17
6 8 8 7
*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:14:13: error: 'pii' was not declared in this scope
   14 |     vector <pii> v;
      |             ^~~
molecules.cpp:14:16: error: template argument 1 is invalid
   14 |     vector <pii> v;
      |                ^
molecules.cpp:14:16: error: template argument 2 is invalid
molecules.cpp:16:11: error: request for member 'push_back' in 'v', which is of non-class type 'int'
   16 |         v.push_back({w[i], i});
      |           ^~~~~~~~~
molecules.cpp:20:12: error: request for member 'begin' in 'v', which is of non-class type 'int'
   20 |     sort(v.begin(), v.end());
      |            ^~~~~
molecules.cpp:20:23: error: request for member 'end' in 'v', which is of non-class type 'int'
   20 |     sort(v.begin(), v.end());
      |                       ^~~
molecules.cpp:34:32: error: invalid types 'int[__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}]' for array subscript
   34 |                 ans.push_back(v[dq.front()].second);
      |                                ^