Submission #922432

#	Time	Username	Problem	Language	Result	Execution time	Memory
922432		HiepVu217	Split the sequence (APIO14_sequence)	C++17	39 / 100	2048 ms	88488 KiB

sequence

#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 17;
int n, k, cut[217][N], z, as[N], c;
long long a[N], f[217][N], s[N], ans;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> k;
    for (int i = 1; i <= n; ++i)
    {
        cin >> a[i];
        s[i] = s[i - 1] + a[i];
    }
//    for (int i = 1; i <= n; ++i)
//    {
//        for (int j = 1; j <= k + 1; ++j)
//        {
//            f[j][i] = -1;
//        }
//    }
    for (int i = 1; i < n; ++i)
    {
        for (int j = 2; j <= min (i + 1, k + 1); ++j)
        {
            for (int t = j - 2; t < i; ++t)
            {
                if (f[j][i] < f[j - 1][t] + (s[i] - s[t]) * (s[n] - s[i]))
                {
                    f[j][i] = f[j - 1][t] + (s[i] - s[t]) * (s[n] - s[i]);
                    cut[j - 1][i] = t;
                    if (f[j][i] >= ans)
                    {
                        ans = f[j][i];
                        z = i;
                    }
                }
            }
        }
    }
    cout << ans << "\n";
    if (!z)
    {
        return 0;
    }
    as[++c] = z;
    int x = cut[k][z];
    while (x)
    {
        as[++c] = x;
        x = cut[--k][x];
    }
    while (c--)
    {
        cout << as[c + 1] << " ";
    }
}

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