Submission #38066687

Source Code Expand

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;
#define chmax(x,y) x = max(x,y);
#define chmin(x,y) x = min(x,y);
const int di[] = {-1, 0, 1, 0};
const int dj[] = {0, -1, 0, 1};
const int INF = 1001001001;
const ll LINF = 1001002003004005006ll;
const double PI = acos(-1);

ll dp[5005][5005];

int main() {
    int n;
    cin >> n;
    if (n == 1) {
        cout << 0 << endl;
        return 0;
    }
    vector<ll> a(n);
    rep(i,n) cin >> a[i];
    vector<ll> sum(n+1);
    rep(i,n) sum[i+1] = sum[i] + a[i];

    for (int i = 1; i < n; i++) {
        for (int j = 0; j <= i-1; j++) {
            // 次平日
            chmax(dp[i+1][j], dp[i][j] + a[min(i-j - 1, n-i - 1)]);

            // 次休日
            ll sub = 0;
            int cnt = i - j - 1;
            sub += sum[(cnt+1)/2] * 2;
            if (cnt%2 == 1) sub -= a[(cnt+1)/2 - 1];
            chmax(dp[i+1][i], dp[j+1][j] + sub);
        }
    }

    ll ans = 0;
    rep(i,n) chmax(ans, dp[n][i]);
    cout << ans << endl;
    return 0;
}

Submission Info

Submission Time
Task E - Work or Rest
User taki0711
Language C++ (GCC 9.2.1)
Score 500
Code Size 1200 Byte
Status AC
Exec Time 202 ms
Memory 120336 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 63
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All sample_01.txt, sample_02.txt, sample_03.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt, test_31.txt, test_32.txt, test_33.txt, test_34.txt, test_35.txt, test_36.txt, test_37.txt, test_38.txt, test_39.txt, test_40.txt, test_41.txt, test_42.txt, test_43.txt, test_44.txt, test_45.txt, test_46.txt, test_47.txt, test_48.txt, test_49.txt, test_50.txt, test_51.txt, test_52.txt, test_53.txt, test_54.txt, test_55.txt, test_56.txt, test_57.txt, test_58.txt, test_59.txt, test_60.txt
Case Name Status Exec Time Memory
sample_01.txt AC 6 ms 3508 KiB
sample_02.txt AC 2 ms 3600 KiB
sample_03.txt AC 2 ms 3528 KiB
test_01.txt AC 2 ms 3656 KiB
test_02.txt AC 2 ms 3552 KiB
test_03.txt AC 1 ms 3496 KiB
test_04.txt AC 2 ms 3652 KiB
test_05.txt AC 2 ms 3684 KiB
test_06.txt AC 2 ms 3468 KiB
test_07.txt AC 2 ms 3684 KiB
test_08.txt AC 2 ms 3668 KiB
test_09.txt AC 2 ms 3500 KiB
test_10.txt AC 2 ms 3592 KiB
test_11.txt AC 2 ms 3556 KiB
test_12.txt AC 2 ms 3564 KiB
test_13.txt AC 2 ms 3552 KiB
test_14.txt AC 2 ms 3660 KiB
test_15.txt AC 2 ms 3584 KiB
test_16.txt AC 3 ms 3652 KiB
test_17.txt AC 2 ms 3600 KiB
test_18.txt AC 2 ms 3504 KiB
test_19.txt AC 2 ms 3648 KiB
test_20.txt AC 2 ms 3564 KiB
test_21.txt AC 3 ms 3644 KiB
test_22.txt AC 2 ms 3468 KiB
test_23.txt AC 2 ms 3496 KiB
test_24.txt AC 2 ms 3568 KiB
test_25.txt AC 2 ms 3604 KiB
test_26.txt AC 2 ms 3588 KiB
test_27.txt AC 2 ms 3448 KiB
test_28.txt AC 2 ms 3540 KiB
test_29.txt AC 55 ms 36108 KiB
test_30.txt AC 6 ms 4812 KiB
test_31.txt AC 23 ms 15096 KiB
test_32.txt AC 81 ms 52152 KiB
test_33.txt AC 15 ms 12372 KiB
test_34.txt AC 200 ms 120172 KiB
test_35.txt AC 201 ms 120332 KiB
test_36.txt AC 198 ms 120152 KiB
test_37.txt AC 198 ms 120228 KiB
test_38.txt AC 198 ms 120168 KiB
test_39.txt AC 197 ms 120284 KiB
test_40.txt AC 198 ms 120336 KiB
test_41.txt AC 201 ms 120240 KiB
test_42.txt AC 196 ms 120232 KiB
test_43.txt AC 195 ms 120336 KiB
test_44.txt AC 198 ms 120328 KiB
test_45.txt AC 157 ms 96888 KiB
test_46.txt AC 201 ms 120232 KiB
test_47.txt AC 17 ms 11828 KiB
test_48.txt AC 201 ms 120176 KiB
test_49.txt AC 7 ms 5196 KiB
test_50.txt AC 118 ms 71572 KiB
test_51.txt AC 76 ms 48976 KiB
test_52.txt AC 202 ms 120144 KiB
test_53.txt AC 199 ms 120228 KiB
test_54.txt AC 196 ms 120320 KiB
test_55.txt AC 121 ms 74864 KiB
test_56.txt AC 64 ms 41104 KiB
test_57.txt AC 64 ms 41064 KiB
test_58.txt AC 196 ms 120284 KiB
test_59.txt AC 196 ms 120144 KiB
test_60.txt AC 196 ms 120228 KiB