Submission #566345

#	Time	Username	Problem	Language	Result	Execution time	Memory
566345		XEMPLI5	Split the sequence (APIO14_sequence)	C++17	0 / 100	16 ms	1236 KiB

sequence

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, k;
    cin >> n >> k;

    vector<int> trees(n), pref(n);

    for (int i = 0; i < n; i++)
    {
        cin >> trees[i];
        pref[i] = trees[i];
        if (i)
            pref[i] += pref[i - 1];
    }

    set<pair<int, int>> parts;
    parts.insert({0, n - 1});

    int ans = 0;
    vector<int> moves;

    for (int l = 0; l < k; l++)
    {
        int mxVal = 0, loc = -1, mst = -1, med = -1;
        for (auto e : parts)
        {
            int st = e.first, ed = e.second;
            int curVal = 0;
            for (int i = st; i < ed; i++)
            {
                int fpart = pref[i];
                if (st)
                    fpart -= pref[st - 1];
                int spart = pref[ed];
                spart -= pref[i];
                int curVal = spart * fpart;
                if (curVal >= mxVal)
                {
                    mxVal = curVal;
                    loc = i;
                    mst = st;
                    med = ed;
                }
            }
        }
        if (loc != -1)
        {
            ans += mxVal;
            moves.push_back(loc + 1);
            parts.erase(parts.find({mst, med}));
            parts.insert({mst, loc});
            parts.insert({loc + 1, med});
        }
        else
            break;
    }
    cout << ans << '\n';
    for (auto e : moves)
    {
        cout << e << ' ';
    }
    return 0;
}

Compilation message (stderr)

sequence.cpp: In function 'int main()':
sequence.cpp:32:17: warning: unused variable 'curVal' [-Wunused-variable]
   32 |             int curVal = 0;
      |                 ^~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 17
• Subtask 5: 0 / 21
• Subtask 6: 0 / 29