oj.uz

Submission #932833

# Submission time Handle Problem Language Result Execution time Memory
932833 2024-02-24T09:56:33 Z Pring Maze (JOI23_ho_t3) C++17
8 / 100
 719 ms 1236396 KB 
#include <bits/stdc++.h>
using namespace std;

#ifdef MIKU
#define debug(x...) cout << "[" << #x << "] : ", dout(x)
void dout() { cout << endl; }
template <typename T, typename ...U>
void dout(T t, U ...u) { cout << t << (sizeof...(u) ? ", " : ""); dout(u...); }
#else
#define debug(...) 39
#endif

// #define int long long
#define fs first
#define sc second
#define mp make_pair
#define FOR(i, j, k) for (int i = j, Z = k; i < Z; i++)
typedef pair<int, int> pii;

const int MXN = 6000005, LAYER = 8;
const pii D[4] = {mp(1, 0), mp(-1, 0), mp(0, 1), mp(0, -1)};
int R, C, N;
pii sr, to;
vector<string> s;
int K;
vector<int> edge[MXN * LAYER];
int dis[MXN * LAYER];

inline int cvt(pii p) {
    return p.fs * C + p.sc;
}

inline pii cvt(int x) {
    return mp(x / C, x % C);
}

inline pii operator+(pii a, pii b) {
    return mp(a.fs + b.fs, a.sc + b.sc);
}

inline bool OUT(pii p) {
    if (!(0 <= p.fs && p.fs < R)) return true;
    if (!(0 <= p.sc && p.sc < C)) return true;
    return false;
}

namespace EDGE {
    inline int cvt3(int l, int x, int y) {
        return l * R * C + x * C + y;
    }

    inline void PUSH_EDGE(int sr, int to, int val) {
        // debug(sr, to, val);
        edge[sr].push_back(val ? ~to : to);
    }

    void E0() {
        FOR(i, 0, R * C) {
            pii p = cvt(i);
            if (s[p.fs][p.sc] == '#') continue;
            FOR(d, 0, 4) {
                pii nxt = p + D[d];
                if (OUT(nxt)) continue;
                if (s[nxt.fs][nxt.sc] == '#') continue;
                PUSH_EDGE(cvt3(0, p.fs, p.sc), cvt3(0, nxt.fs, nxt.sc), 0);
            }
        }
    }

    void E0_1() {
        FOR(i, 0, R * C) {
            pii p = cvt(i);
            FOR(d, 0, 4) {
                pii nxt = p + D[d];
                if (OUT(nxt)) continue;
                PUSH_EDGE(cvt3(0, p.fs, p.sc), cvt3(1, nxt.fs, nxt.sc), 1);
            }
        }
    }

    void E23_4() {
        FOR(j, 0, C) {
            for (int l_bnd = 0, r_bnd; l_bnd < R; l_bnd += K) {
                r_bnd = min(R, l_bnd + K);
                FOR(i, l_bnd, r_bnd) {
                    PUSH_EDGE(cvt3(2, i, j), cvt3(4, i, j), 0);
                    PUSH_EDGE(cvt3(3, i, j), cvt3(4, i, j), 0);
                }
                FOR(i, l_bnd, r_bnd - 1) PUSH_EDGE(cvt3(2, i, j), cvt3(2, i + 1, j), 0);
                FOR(i, l_bnd + 1, r_bnd) PUSH_EDGE(cvt3(3, i, j), cvt3(3, i - 1, j), 0);
            }
        }
    }

    void E1_23() {
        auto ADD_EDGE = [&](int y, int l, int r, int sr) -> void {
            if (r - l == K) {
                PUSH_EDGE(sr, cvt3(2, l, y), 0);
                PUSH_EDGE(sr, cvt3(3, r - 1, y), 0);
                return;
            }
            if (r == R) {
                PUSH_EDGE(sr, cvt3(2, l, y), 0);
                int m = (l ? (l - 1) / K * K + K : 0);
                if (m < R) PUSH_EDGE(sr, cvt3(2, m, y), 0);
                return;
            }
            PUSH_EDGE(sr, cvt3(3, r - 1, y), 0);
        };
        FOR(j, 0, C) {
            FOR(i, 0, R) {
                int l_bnd = max(0, i - (N - 1)), r_bnd = min(R, i + N);
                ADD_EDGE(j, l_bnd, r_bnd, cvt3(1, i, j));
            }
        }
    }

    void E56_7() {
        FOR(i, 0, R) {
            for (int l_bnd = 0, r_bnd; l_bnd < C; l_bnd += K) {
                r_bnd = min(C, l_bnd + K);
                FOR(j, l_bnd, r_bnd) {
                    PUSH_EDGE(cvt3(5, i, j), cvt3(7, i, j), 0);
                    PUSH_EDGE(cvt3(6, i, j), cvt3(7, i, j), 0);
                }
                FOR(j, l_bnd, r_bnd - 1) PUSH_EDGE(cvt3(5, i, j), cvt3(5, i, j + 1), 0);
                FOR(j, l_bnd + 1, r_bnd) PUSH_EDGE(cvt3(6, i, j), cvt3(6, i, j - 1), 0);
            }
        }
    }

    void E4_56() {
        auto ADD_EDGE = [&](int x, int l, int r, int sr) -> void {
            if (r - l == K) {
                PUSH_EDGE(sr, cvt3(5, x, l), 0);
                PUSH_EDGE(sr, cvt3(6, x, r - 1), 0);
                return;
            }
            if (r == C) {
                PUSH_EDGE(sr, cvt3(5, x, l), 0);
                int m = (l ? (l - 1) / K * K + K : 0);
                if (m < C) PUSH_EDGE(sr, cvt3(5, x, m), 0);
                return;
            }
            PUSH_EDGE(sr, cvt3(6, x, r - 1), 0);
        };
        FOR(i, 0, R) {
            FOR(j, 0, C) {
                int l_bnd = max(0, j - (N - 1)), r_bnd = min(C, j + N);
                ADD_EDGE(i, l_bnd, r_bnd, cvt3(4, i, j));
            }
        }
    }

    void E7_0() {
        FOR(i, 0, R * C) {
            pii p = cvt(i);
            FOR(d, 0, 4) {
                pii nxt = p + D[d];
                if (OUT(nxt) || s[nxt.fs][nxt.sc] == '#') continue;
                PUSH_EDGE(cvt3(7, p.fs, p.sc), cvt3(0, nxt.fs, nxt.sc), 0);
            }
        }
    }

    void E00() {
        FOR(i, 0, R * C) {
            pii p = cvt(i);
            FOR(d, 0, 4) {
                pii nxt = p + D[d];
                if (OUT(nxt)) continue;
                // if s[nxt.fs][nxt.sc] == '#'
                PUSH_EDGE(cvt(p), cvt(nxt), s[nxt.fs][nxt.sc] == '#');
            }
        }
    }

    void BUILD() {
        // E0();
        // E0_1();
        // E23_4();
        // E1_23();
        // E56_7();
        // E4_56();
        // E7_0();
        E00();
    }
}

namespace BFS {
    deque<pii> dq;
    void GO(int sr) {
        fill(dis, dis + R * C * LAYER, -1);
        dq.push_back(mp(0, sr));
        while (dq.size()) {
            pii now = dq.front();
            dq.pop_front();
            // debug(now.fs, now.sc);
            if (dis[now.sc] != -1) continue;
            int len = now.fs, id = now.sc;
            dis[id] = len;
            for (auto &i : edge[id]) {
                int tg = (i < 0 ? ~i : i);
                if (dis[tg] != -1) continue;
                if (i < 0) dq.push_back(mp(len + 1, tg));
                else dq.push_front(mp(len, tg));
            }
        }
    }
}

void miku() {
    cin >> R >> C >> N >> sr.fs >> sr.sc >> to.fs >> to.sc;
    sr.fs--, sr.sc--, to.fs--, to.sc--;
    K = N * 2 - 1;
    s.resize(R);
    FOR(i, 0, R) cin >> s[i];
    EDGE::BUILD();
    BFS::GO(cvt(sr));
    cout << dis[cvt(to)] << '\n';
}

int32_t main() {
    cin.tie(0) -> sync_with_stdio(false);
    cin.exceptions(iostream::failbit);
    miku();
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 526 ms 1128580 KB Output is correct
2 Correct 437 ms 1128608 KB Output is correct
3 Correct 444 ms 1128868 KB Output is correct
4 Correct 425 ms 1128532 KB Output is correct
5 Correct 444 ms 1128512 KB Output is correct
6 Correct 461 ms 1128640 KB Output is correct
7 Correct 447 ms 1128796 KB Output is correct
8 Correct 435 ms 1128536 KB Output is correct
9 Correct 420 ms 1128536 KB Output is correct
10 Correct 478 ms 1128788 KB Output is correct
11 Correct 447 ms 1128536 KB Output is correct
12 Correct 441 ms 1128736 KB Output is correct
13 Correct 442 ms 1128532 KB Output is correct
14 Correct 455 ms 1128792 KB Output is correct
15 Correct 472 ms 1128696 KB Output is correct
16 Correct 456 ms 1128672 KB Output is correct
17 Correct 464 ms 1128852 KB Output is correct
18 Correct 436 ms 1128536 KB Output is correct
19 Correct 484 ms 1132372 KB Output is correct
20 Correct 448 ms 1131676 KB Output is correct
21 Correct 450 ms 1132632 KB Output is correct
22 Correct 493 ms 1132376 KB Output is correct
23 Correct 438 ms 1132628 KB Output is correct
24 Correct 445 ms 1132492 KB Output is correct
25 Correct 478 ms 1132596 KB Output is correct
26 Correct 505 ms 1132372 KB Output is correct
27 Correct 457 ms 1132536 KB Output is correct
28 Correct 469 ms 1132496 KB Output is correct
29 Correct 504 ms 1138312 KB Output is correct
30 Correct 458 ms 1132628 KB Output is correct
31 Correct 459 ms 1139312 KB Output is correct
32 Correct 519 ms 1138264 KB Output is correct
33 Correct 474 ms 1138160 KB Output is correct
34 Correct 468 ms 1138148 KB Output is correct
35 Correct 513 ms 1138160 KB Output is correct
36 Correct 494 ms 1138464 KB Output is correct
37 Correct 479 ms 1138408 KB Output is correct
38 Correct 522 ms 1138216 KB Output is correct
39 Correct 691 ms 1225780 KB Output is correct
40 Correct 479 ms 1139796 KB Output is correct
41 Correct 440 ms 1140404 KB Output is correct
42 Correct 500 ms 1142404 KB Output is correct
43 Correct 458 ms 1144196 KB Output is correct
44 Correct 552 ms 1176404 KB Output is correct
45 Correct 532 ms 1180396 KB Output is correct
46 Correct 625 ms 1236396 KB Output is correct
47 Correct 704 ms 1225576 KB Output is correct
48 Correct 669 ms 1225400 KB Output is correct
49 Correct 554 ms 1225020 KB Output is correct
50 Correct 566 ms 1225068 KB Output is correct
51 Correct 719 ms 1225812 KB Output is correct
52 Correct 707 ms 1225608 KB Output is correct
53 Correct 658 ms 1225216 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 419 ms 1128936 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 421 ms 1128372 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Incorrect 419 ms 1128936 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 419 ms 1128936 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 526 ms 1128580 KB Output is correct
2 Correct 437 ms 1128608 KB Output is correct
3 Correct 444 ms 1128868 KB Output is correct
4 Correct 425 ms 1128532 KB Output is correct
5 Correct 444 ms 1128512 KB Output is correct
6 Correct 461 ms 1128640 KB Output is correct
7 Correct 447 ms 1128796 KB Output is correct
8 Correct 435 ms 1128536 KB Output is correct
9 Correct 420 ms 1128536 KB Output is correct
10 Correct 478 ms 1128788 KB Output is correct
11 Correct 447 ms 1128536 KB Output is correct
12 Correct 441 ms 1128736 KB Output is correct
13 Correct 442 ms 1128532 KB Output is correct
14 Correct 455 ms 1128792 KB Output is correct
15 Correct 472 ms 1128696 KB Output is correct
16 Correct 456 ms 1128672 KB Output is correct
17 Correct 464 ms 1128852 KB Output is correct
18 Correct 436 ms 1128536 KB Output is correct
19 Correct 484 ms 1132372 KB Output is correct
20 Correct 448 ms 1131676 KB Output is correct
21 Correct 450 ms 1132632 KB Output is correct
22 Correct 493 ms 1132376 KB Output is correct
23 Correct 438 ms 1132628 KB Output is correct
24 Correct 445 ms 1132492 KB Output is correct
25 Correct 478 ms 1132596 KB Output is correct
26 Correct 505 ms 1132372 KB Output is correct
27 Correct 457 ms 1132536 KB Output is correct
28 Correct 469 ms 1132496 KB Output is correct
29 Correct 504 ms 1138312 KB Output is correct
30 Correct 458 ms 1132628 KB Output is correct
31 Correct 459 ms 1139312 KB Output is correct
32 Correct 519 ms 1138264 KB Output is correct
33 Correct 474 ms 1138160 KB Output is correct
34 Correct 468 ms 1138148 KB Output is correct
35 Correct 513 ms 1138160 KB Output is correct
36 Correct 494 ms 1138464 KB Output is correct
37 Correct 479 ms 1138408 KB Output is correct
38 Correct 522 ms 1138216 KB Output is correct
39 Correct 691 ms 1225780 KB Output is correct
40 Correct 479 ms 1139796 KB Output is correct
41 Correct 440 ms 1140404 KB Output is correct
42 Correct 500 ms 1142404 KB Output is correct
43 Correct 458 ms 1144196 KB Output is correct
44 Correct 552 ms 1176404 KB Output is correct
45 Correct 532 ms 1180396 KB Output is correct
46 Correct 625 ms 1236396 KB Output is correct
47 Correct 704 ms 1225576 KB Output is correct
48 Correct 669 ms 1225400 KB Output is correct
49 Correct 554 ms 1225020 KB Output is correct
50 Correct 566 ms 1225068 KB Output is correct
51 Correct 719 ms 1225812 KB Output is correct
52 Correct 707 ms 1225608 KB Output is correct
53 Correct 658 ms 1225216 KB Output is correct
54 Incorrect 419 ms 1128936 KB Output isn't correct
55 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 526 ms 1128580 KB Output is correct
2 Correct 437 ms 1128608 KB Output is correct
3 Correct 444 ms 1128868 KB Output is correct
4 Correct 425 ms 1128532 KB Output is correct
5 Correct 444 ms 1128512 KB Output is correct
6 Correct 461 ms 1128640 KB Output is correct
7 Correct 447 ms 1128796 KB Output is correct
8 Correct 435 ms 1128536 KB Output is correct
9 Correct 420 ms 1128536 KB Output is correct
10 Correct 478 ms 1128788 KB Output is correct
11 Correct 447 ms 1128536 KB Output is correct
12 Correct 441 ms 1128736 KB Output is correct
13 Correct 442 ms 1128532 KB Output is correct
14 Correct 455 ms 1128792 KB Output is correct
15 Correct 472 ms 1128696 KB Output is correct
16 Correct 456 ms 1128672 KB Output is correct
17 Correct 464 ms 1128852 KB Output is correct
18 Correct 436 ms 1128536 KB Output is correct
19 Correct 484 ms 1132372 KB Output is correct
20 Correct 448 ms 1131676 KB Output is correct
21 Correct 450 ms 1132632 KB Output is correct
22 Correct 493 ms 1132376 KB Output is correct
23 Correct 438 ms 1132628 KB Output is correct
24 Correct 445 ms 1132492 KB Output is correct
25 Correct 478 ms 1132596 KB Output is correct
26 Correct 505 ms 1132372 KB Output is correct
27 Correct 457 ms 1132536 KB Output is correct
28 Correct 469 ms 1132496 KB Output is correct
29 Correct 504 ms 1138312 KB Output is correct
30 Correct 458 ms 1132628 KB Output is correct
31 Correct 459 ms 1139312 KB Output is correct
32 Correct 519 ms 1138264 KB Output is correct
33 Correct 474 ms 1138160 KB Output is correct
34 Correct 468 ms 1138148 KB Output is correct
35 Correct 513 ms 1138160 KB Output is correct
36 Correct 494 ms 1138464 KB Output is correct
37 Correct 479 ms 1138408 KB Output is correct
38 Correct 522 ms 1138216 KB Output is correct
39 Correct 691 ms 1225780 KB Output is correct
40 Correct 479 ms 1139796 KB Output is correct
41 Correct 440 ms 1140404 KB Output is correct
42 Correct 500 ms 1142404 KB Output is correct
43 Correct 458 ms 1144196 KB Output is correct
44 Correct 552 ms 1176404 KB Output is correct
45 Correct 532 ms 1180396 KB Output is correct
46 Correct 625 ms 1236396 KB Output is correct
47 Correct 704 ms 1225576 KB Output is correct
48 Correct 669 ms 1225400 KB Output is correct
49 Correct 554 ms 1225020 KB Output is correct
50 Correct 566 ms 1225068 KB Output is correct
51 Correct 719 ms 1225812 KB Output is correct
52 Correct 707 ms 1225608 KB Output is correct
53 Correct 658 ms 1225216 KB Output is correct
54 Incorrect 419 ms 1128936 KB Output isn't correct
55 Halted 0 ms 0 KB -

Subtask #8
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 526 ms 1128580 KB Output is correct
2 Correct 437 ms 1128608 KB Output is correct
3 Correct 444 ms 1128868 KB Output is correct
4 Correct 425 ms 1128532 KB Output is correct
5 Correct 444 ms 1128512 KB Output is correct
6 Correct 461 ms 1128640 KB Output is correct
7 Correct 447 ms 1128796 KB Output is correct
8 Correct 435 ms 1128536 KB Output is correct
9 Correct 420 ms 1128536 KB Output is correct
10 Correct 478 ms 1128788 KB Output is correct
11 Correct 447 ms 1128536 KB Output is correct
12 Correct 441 ms 1128736 KB Output is correct
13 Correct 442 ms 1128532 KB Output is correct
14 Correct 455 ms 1128792 KB Output is correct
15 Correct 472 ms 1128696 KB Output is correct
16 Correct 456 ms 1128672 KB Output is correct
17 Correct 464 ms 1128852 KB Output is correct
18 Correct 436 ms 1128536 KB Output is correct
19 Correct 484 ms 1132372 KB Output is correct
20 Correct 448 ms 1131676 KB Output is correct
21 Correct 450 ms 1132632 KB Output is correct
22 Correct 493 ms 1132376 KB Output is correct
23 Correct 438 ms 1132628 KB Output is correct
24 Correct 445 ms 1132492 KB Output is correct
25 Correct 478 ms 1132596 KB Output is correct
26 Correct 505 ms 1132372 KB Output is correct
27 Correct 457 ms 1132536 KB Output is correct
28 Correct 469 ms 1132496 KB Output is correct
29 Correct 504 ms 1138312 KB Output is correct
30 Correct 458 ms 1132628 KB Output is correct
31 Correct 459 ms 1139312 KB Output is correct
32 Correct 519 ms 1138264 KB Output is correct
33 Correct 474 ms 1138160 KB Output is correct
34 Correct 468 ms 1138148 KB Output is correct
35 Correct 513 ms 1138160 KB Output is correct
36 Correct 494 ms 1138464 KB Output is correct
37 Correct 479 ms 1138408 KB Output is correct
38 Correct 522 ms 1138216 KB Output is correct
39 Correct 691 ms 1225780 KB Output is correct
40 Correct 479 ms 1139796 KB Output is correct
41 Correct 440 ms 1140404 KB Output is correct
42 Correct 500 ms 1142404 KB Output is correct
43 Correct 458 ms 1144196 KB Output is correct
44 Correct 552 ms 1176404 KB Output is correct
45 Correct 532 ms 1180396 KB Output is correct
46 Correct 625 ms 1236396 KB Output is correct
47 Correct 704 ms 1225576 KB Output is correct
48 Correct 669 ms 1225400 KB Output is correct
49 Correct 554 ms 1225020 KB Output is correct
50 Correct 566 ms 1225068 KB Output is correct
51 Correct 719 ms 1225812 KB Output is correct
52 Correct 707 ms 1225608 KB Output is correct
53 Correct 658 ms 1225216 KB Output is correct
54 Incorrect 419 ms 1128936 KB Output isn't correct
55 Halted 0 ms 0 KB -