Submission #226432

#	Time	Username	Problem	Language	Result	Execution time	Memory
226432		sevlll	Split the sequence (APIO14_sequence)	C++14	0 / 100	484 ms	131076 KiB

sequence

// #define _GLIBCXX_DEBUG

#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <cmath>
#include <vector>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <queue>
#include <ctime>
#include <cassert>
#include <complex>
#include <string>
#include <cstring>
#include <random>
#include <queue>
#include <bitset>

#define int long long
#define dbl long double
#define pb push_back
#define str string
using namespace std;
const int M = 998244353;
int dp[100009][209];
int par[100009][209];

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, k;
    cin >> n >> k;
    vector<int> A(n + 1);
    for (int i = 1; i <= n; i++) cin >> A[n + 1 - i];
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= k; j++) {
            dp[i][j] = -1e18;
        }
    }
    vector<int> pref = A;
    for (int i = 1; i <= n; i++) pref[i] += pref[i - 1];
    for (int t = 1; t <= k; t++) {
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j < i; j++) {
                if (dp[i][t] < dp[j][t - 1] + pref[j] * (pref[i] - pref[j])) {
                    par[i][t] = j;
                    dp[i][t] = dp[j][t - 1] + pref[j] * (pref[i] - pref[j]);
                }
            }
        }
    }
    cout << dp[n][k] << '\n';
    int i = n;
    int t = k;
    vector<int> ans;
    while (t--) {
        ans.pb(n - 1 - par[i][t]);
        i = par[i][t];
    }
    for (auto p : ans) cout << p << ' ';


}

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