Submission #990114

#	Time	Username	Problem	Language	Result	Execution time	Memory
990114		LOLOLO	Maja (COCI18_maja)	C++14	0 / 110	15 ms	65536 KiB

maja

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
#define           f     first
#define           s     second
#define           pb    push_back
#define           ep    emplace
#define           eb    emplace_back
#define           lb    lower_bound
#define           ub    upper_bound
#define       all(x)    x.begin(), x.end()
#define      rall(x)    x.rbegin(), x.rend()
#define   uniquev(v)    sort(all(v)), (v).resize(unique(all(v)) - (v).begin())
#define     mem(f,x)    memset(f , x , sizeof(f))
#define        sz(x)    (ll)(x).size()
#define  __lcm(a, b)    (1ll * ((a) / __gcd((a), (b))) * (b))
#define          mxx    *max_element
#define          mnn    *min_element
#define    cntbit(x)    __builtin_popcountll(x)
#define       len(x)    (int)(x.length())
 
const int N = 1e2 + 10;
ll mat[N][N], sum[N][N], dp[N * N][N][N];

ll solve() {
    ll k;
    int n, m, a, b;
    cin >> n >> m >> a >> b >> k;

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            cin >> mat[i][j];
        }
    }

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            sum[i][j] = max({mat[i - 1][j], mat[i][j - 1], mat[i + 1][j], mat[i][j + 1]}) + mat[i][j];
        }
    }

    for (int i = 0; i <= n + 1; i++) {
        for (int j = 0; j <= m + 1; j++) {
            dp[0][i][j] = -1e18;
        }
    }

    dp[0][a][b] = mat[a][b] * 2;

    ll sz = n * m;

    for (int id = 1; id <= sz; id++) {
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= m; j++) {
                dp[id][i][j] = max({dp[id - 1][i - 1][j], dp[id - 1][i][j - 1], dp[id - 1][i + 1][j], dp[id - 1][i][j + 1]}) + mat[i][j] * 2;
            }
        }
    }

    ll ans = 0;
    k++;

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            ll x = 0;
            ll odd = -1e18, even = -1e18;
            for (ll f = min(sz, k); f >= 1; f--) {
                while (x <= sz && x + f <= k) {
                    if (x % 2) {
                        odd = max(odd, dp[x][i][j] - x * sum[i][j]);
                    } else {
                        even = max(even, dp[x][i][j] - x * sum[i][j]);
                    }
                    x++;
                }

                int t = (k - f) % 2;
                if (t % 2) {
                    ans = max(ans, dp[f][i][j] - f * sum[i][j] + odd - mat[i][j] * 2 + sum[i][j] * k);
                } else {
                    ans = max(ans, dp[f][i][j] - f * sum[i][j] + even - mat[i][j] * 2 + sum[i][j] * k);
                }
            }
        }
    }

    return ans / 2;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    int t = 1;
    //cin >> t;

    while (t--) {
        cout << solve() << '\n';
    }

    return 0;
} 
 

• Subtask 1: 0 / 11
• Subtask 2: 0 / 11
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 11
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11