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답안 #229021

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
229021 2020-05-03T09:20:32 Z VEGAnn Maja (COCI18_maja) C++14
88 / 110
 2000 ms 34296 KB 
#include <bits/stdc++.h>
#define PB push_back
using namespace std;
typedef long long ll;
const int CNST = 2;
const ll N = 110;
const ll PW = 22;
int step[4][2] = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
ll c[N][N], a, b, n, m, k;
ll ans[4 * N][N][N];

void MAX(ll &x, ll y){
    x = max(x, y);
}

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

    cin >> n >> m >> a >> b >> k;
    a--; b--;

    for (ll i = 0; i < n; i++)
        for (ll j = 0; j < m; j++)
            cin >> c[i][j];

    ans[0][a][b] = 1;

    int cnst = 2 * (n + m);

    for (ll ite = 1; ite <= cnst; ite++){
//    for (ll ite = 1; ite <= CNST; ite++){
        for (ll i = 0; i < n; i++)
        for (ll j = 0; j < m; j++){
            if (ans[ite - 1][i][j] == 0) continue;

            if (i > 0) MAX(ans[ite][i - 1][j], ans[ite - 1][i][j] + c[i - 1][j]);
            if (j > 0) MAX(ans[ite][i][j - 1], ans[ite - 1][i][j] + c[i][j - 1]);
            if (j + 1 < m) MAX(ans[ite][i][j + 1], ans[ite - 1][i][j] + c[i][j + 1]);
            if (i + 1 < n) MAX(ans[ite][i + 1][j], ans[ite - 1][i][j] + c[i + 1][j]);
        }
    }

    if (k <= cnst)
        cout << ans[k][a][b] - 1 << '\n';
    else {
        ll res = 0;

        for (ll i = 0; i < n; i++)
        for (ll j = 0; j < m; j++) {
            ll mx = 0;
            if (i > 0) MAX(mx, c[i - 1][j]);
            if (j > 0) MAX(mx, c[i][j - 1]);
            if (j + 1 < m) MAX(mx, c[i][j + 1]);
            if (i + 1 < n) MAX(mx, c[i + 1][j]);

            mx += c[i][j];

            for (ll st = 0; st <= cnst; st++)
            for (ll ed = st; ed <= cnst; ed += 2){
    //        for (ll st = 0; st <= CNST; st++){
                if (st + ed > k) break;
                if (ans[st][i][j] == 0) continue;

                if (ans[ed][i][j] > 0)  {
                    ll cur = ans[st][i][j] - 1;
                    ll scr = ans[ed][i][j] - 1;

                    res = max(res, cur + scr + mx * (k - st - ed) / 2 - c[i][j]);
                }

                if (ed > 0){
                    ll cur = ans[st][i][j] - 1;

                    for (int ite = 0; ite < 4; ite++) {
                        int cx = i + step[ite][0], cy = j + step[ite][1];

                        if (cx < 0 || cy < 0 || cx >= n || cy >= m) continue;

                        ll scr = ans[ed - 1][cx][cy] - 1;
                        ll iter = (k - st - ed) / 2;

                        if (iter == 0) continue;
                        iter--;

                        res = max(res, cur + scr + iter * mx);
                    }
                }
            }
        }

        cout << res;
    }

    return 0;
}

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 512 KB Output is correct
2 Correct 6 ms 512 KB Output is correct

Subtask #2
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 768 KB Output is correct
2 Correct 5 ms 896 KB Output is correct

Subtask #3
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 768 KB Output is correct
2 Correct 7 ms 1280 KB Output is correct

Subtask #4
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 7 ms 1024 KB Output is correct
2 Correct 5 ms 640 KB Output is correct

Subtask #5
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 142 ms 5888 KB Output is correct
2 Correct 6 ms 1280 KB Output is correct
3 Execution timed out 2101 ms 34296 KB Time limit exceeded

Subtask #6
0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 30 ms 1792 KB Output is correct
2 Correct 763 ms 18964 KB Output is correct
3 Execution timed out 2079 ms 32248 KB Time limit exceeded

Subtask #7
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 698 ms 22528 KB Output is correct
2 Correct 1081 ms 24568 KB Output is correct

Subtask #8
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 93 ms 5504 KB Output is correct
2 Correct 123 ms 12632 KB Output is correct

Subtask #9
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 2432 KB Output is correct
2 Correct 13 ms 4096 KB Output is correct

Subtask #10
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 97 ms 12024 KB Output is correct
2 Correct 8 ms 1408 KB Output is correct