Submission #300265

#	Time	Username	Problem	Language	Result	Execution time	Memory
300265		marX	Comparing Plants (IOI20_plants)	C++17	14 / 100	4061 ms	6028 KiB

plants

#include <vector>

using namespace std;

vector<int> xrank;

void init(int k, vector<int> r)
{
    int n = r.size();
    xrank.resize(n);

    vector<bool> used(n);

    int remaining = n;
    int pos = n;

    for (int i = 0; i < n; ++i, --remaining)
    {
        vector<int> current;
        for (int i = 0; i < n; ++i)
        {
            if (used[i])
                continue;

            if (r[i] == 0)
                current.push_back(i);
        }

        int start = 0;
        int max_diff = current[0] + n - current.back();

        for (int i = 1; i < current.size(); ++i)
        {
            int cur_diff = current[i] - current[i - 1];
            if (cur_diff > max_diff)
            {
                max_diff = cur_diff;
                start = i;
            }
        }

        if (current.empty())
            break;

        int u = current[start];
        used[u] = true;
        xrank[u] = pos--;

        for (int j = 1; j < k; ++j)
        {
            int t = (u - j + n) % n;
            r[t]--;
            // debug(t, u, r[t]);
        }

        // debug(i);
        // debug(current[start], current);
        // debug(used);
        // debug(r);
    }

    // debug(remaining);

    // if (remaining != 0)
    //     fin("FAIL!!!");
}

int compare_plants(int a, int b)
{
    return xrank[a] > xrank[b] ? +1 : -1;
}

Compilation message (stderr)

plants.cpp: In function 'void init(int, std::vector<int>)':
plants.cpp:32:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         for (int i = 1; i < current.size(); ++i)
      |                         ~~^~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 11
• Subtask 6: 0 / 15
• Subtask 7: 0 / 25