Submission #1307428

#	Time	Username	Problem	Language	Result	Execution time	Memory
1307428		the_commando_x	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

std::vector<int> find_subset(int x, int y, std::vector<int> w)
{
    int n = w.size();

    std::vector<std::pair<int, int>> a(n);
    for (int i = 0; i < n; ++i)
        a[i] = {w[i], i};

    std::sort(a.begin(), a.end());

    long long sum = 0;

    int l = 0, r = 0;
    while (r < n)
    {
        sum += a[r].first;

        while (sum > y && l <= r)
            sum -= a[l++].first;

        if (sum >= x && sum <= y)
        {
            std::vector<int> ans;
            for (int i = l; i <= r; ++i)
                ans.push_back(a[i].second);

            return ans;
        }
        ++r;
    }

    return std::vector<int>(0);
}

Compilation message (stderr)

molecules.cpp:1:6: error: 'vector' in namespace 'std' does not name a template type
    1 | std::vector<int> find_subset(int x, int y, std::vector<int> w)
      |      ^~~~~~
molecules.cpp:1:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
  +++ |+#include <vector>
    1 | std::vector<int> find_subset(int x, int y, std::vector<int> w)
molecules.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
molecules_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~