Submission #615687

#	Time	Username	Problem	Language	Result	Execution time	Memory
615687		bebra	Candies (JOI18_candies)	C++17	8 / 100	720 ms	259428 KiB

candies

#include <bits/stdc++.h>
using namespace std;

const int MAX_N = (int)4000;
long long dp[MAX_N][MAX_N / 2][2];
const long long MINUS_INF = -1e15;


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<long long> a(n);
    for (auto& x : a) cin >> x;
    for (int i = 0; i < MAX_N; ++i) {
        for (int j = 0; j < MAX_N / 2; ++j) {
            for (int f = 0; f <= 1; ++f) {
                dp[i][j][f] = MINUS_INF;
            }
        }
    }
    dp[0][0][0] = 0;
    dp[0][1][1] = a[0];
    for (int i = 1; i < n; ++i) {
        dp[i][0][0] = 0;
        for (int j = 1; j <= (n + 1) / 2; ++j) {
            dp[i][j][0] = max(dp[i - 1][j][0], dp[i - 1][j][1]);
            if (dp[i - 1][j - 1][0] == MINUS_INF) {
                dp[i][j][1] = MINUS_INF;
            } else {
                dp[i][j][1] = dp[i - 1][j - 1][0] + a[i];
            }
        }
    }
    for (int j = 1; j <= (n + 1) / 2; ++j) {
        cout << max(dp[n - 1][j][0], dp[n - 1][j][1]) << '\n';
    }
    return 0;
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 92