oj.uz

Submission #738889

# Submission time Handle Problem Language Result Execution time Memory
738889 2023-05-09T15:22:25 Z He_Huanglu Maze (JOI23_ho_t3) C++17
8 / 100
 673 ms 1091252 KB 
#include <bits/stdc++.h>
#define ii pair<int, int>
#define fi first
#define se second
using namespace std;

const int N = 6e6;
int n, m, s, rs, cs, re, ce;
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
vector <int> f[N], a[N], p[2][N];
queue <ii> q[2];

int get(int t, int id, int u) {
    return p[t][id][u] == u ? u : p[t][id][u] = get(t, id, p[t][id][u]);
}

void upd(int t, int id, int i, int j, int val) {
    int u = get(t, id, i);
    while (u <= j) {
        if(t) f[id][u] = val;
        else f[u][id] = val;
        u = get(t, id, u + 1);
        if(t && u == n) break ;
        if(!t && u == m) break ;
        p[t][id][i] = u;
    }
}

main () {
    cin.tie(0)->sync_with_stdio(0);
    if(fopen("task.inp", "r")) {
        freopen("task.inp", "r", stdin);
        freopen("wa.out", "w", stdout);
    }
    cin >> m >> n >> s >> rs >> cs >> re >> ce;
    for(int i = 1; i <= m; i++) a[i].resize(n + 1), f[i].resize(n + 1);
    for(int i = 1; i <= m; i++) {
        for(int j = 0; j <= n; j++) p[1][i].push_back(j);
    }
    for(int i = 1; i <= n; i++) {
        for(int j = 0; j <= m; j++) p[0][i].push_back(j);
    }
    for(int i = 1; i <= m; i++) {
        for(int j = 1; j <= n; j++) {
            char ch; cin >> ch;
            a[i][j] = (ch == '.' ? 1 : 0);
        }
    }
    q[1].push({rs, cs}); f[rs][cs] = 1;
    while (!q[1].empty() || !q[0].empty()) {
        while (!q[1].empty()) {
            int x, y; tie(x, y) = q[1].front(); q[1].pop();
            q[0].push({x, y});
            if(x == re && y == ce) return cout << f[x][y] - 1 << "\n", 0;
            for(int i = 0; i < 4; i++) {
                int u = x + dx[i], v = y + dy[i];
                if(u && u <= m && v && v <= n && !f[u][v] && a[u][v]) {
                    f[u][v] = f[x][y];
                    q[1].push({u, v});
                }
            }
        }
        while (!q[0].empty()) {
            int x, y; tie(x, y) = q[0].front(); q[0].pop();
            if(s != 1) {
                if(x == rs && y == cs) {
                    int s1 = max(1, x - s), s2 = max(1, y - s);
                    int s3 = min(m, x + s), s4 = min(n, y + s);
                    for(int i = s1; i <= s3; i++) {
                        for(int j = s2; j <= s4; j++) if(!f[i][j]) {
                            f[i][j] = f[x][y] + 1;
                            q[1].push({i, j});
                        }
                    }
                    continue;
                }
                for(int i = 0; i < 4; i++) {
                    int u = x + dx[i], v = y + dy[i], val = f[x][y] + 1;
                    if(i == 0) upd(0, y + n, x - n, x + n, val);
                    if(i == 1) upd(1, x + n, y - n, y + n, val);
                    if(i == 2) upd(0, y - n, x - n, x + n, val);
                    if(i == 3) upd(1, x - n, y - n, y + n, val);
                    break ;
                }
            }
            else {
                for(int i = 0; i < 4; i++) {
                    int u = x + dx[i], v = y + dy[i];
                    if(u && u <= m && v && v <= n && !f[u][v]) {
                        f[u][v] = f[x][y] + 1;
                        q[1].push({u, v});
                    }
                }
            }
        }
    }

}

Compilation message

Main.cpp:30:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   30 | main () {
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:79:25: warning: unused variable 'u' [-Wunused-variable]
   79 |                     int u = x + dx[i], v = y + dy[i], val = f[x][y] + 1;
      |                         ^
Main.cpp:79:40: warning: unused variable 'v' [-Wunused-variable]
   79 |                     int u = x + dx[i], v = y + dy[i], val = f[x][y] + 1;
      |                                        ^
Main.cpp:33:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |         freopen("task.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |         freopen("wa.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 269 ms 563920 KB Output is correct
2 Correct 307 ms 563904 KB Output is correct
3 Correct 273 ms 563936 KB Output is correct
4 Correct 262 ms 563936 KB Output is correct
5 Correct 307 ms 563932 KB Output is correct
6 Correct 288 ms 563820 KB Output is correct
7 Correct 297 ms 563956 KB Output is correct
8 Correct 284 ms 563864 KB Output is correct
9 Correct 281 ms 563908 KB Output is correct
10 Correct 308 ms 563912 KB Output is correct
11 Correct 294 ms 563920 KB Output is correct
12 Correct 281 ms 563908 KB Output is correct
13 Correct 313 ms 563908 KB Output is correct
14 Correct 310 ms 563916 KB Output is correct
15 Correct 280 ms 563916 KB Output is correct
16 Correct 307 ms 564056 KB Output is correct
17 Correct 346 ms 563936 KB Output is correct
18 Correct 288 ms 563928 KB Output is correct
19 Correct 303 ms 564900 KB Output is correct
20 Correct 346 ms 565916 KB Output is correct
21 Correct 295 ms 565332 KB Output is correct
22 Correct 322 ms 564952 KB Output is correct
23 Correct 328 ms 564824 KB Output is correct
24 Correct 355 ms 566536 KB Output is correct
25 Correct 319 ms 566504 KB Output is correct
26 Correct 321 ms 564908 KB Output is correct
27 Correct 340 ms 564904 KB Output is correct
28 Correct 292 ms 564916 KB Output is correct
29 Correct 338 ms 566660 KB Output is correct
30 Correct 327 ms 565536 KB Output is correct
31 Correct 376 ms 567816 KB Output is correct
32 Correct 362 ms 566736 KB Output is correct
33 Correct 333 ms 566808 KB Output is correct
34 Correct 354 ms 570408 KB Output is correct
35 Correct 340 ms 570404 KB Output is correct
36 Correct 362 ms 566844 KB Output is correct
37 Correct 295 ms 566904 KB Output is correct
38 Correct 274 ms 566732 KB Output is correct
39 Correct 407 ms 595368 KB Output is correct
40 Correct 272 ms 567372 KB Output is correct
41 Correct 282 ms 571932 KB Output is correct
42 Correct 290 ms 568204 KB Output is correct
43 Correct 312 ms 570680 KB Output is correct
44 Correct 320 ms 578620 KB Output is correct
45 Correct 336 ms 580964 KB Output is correct
46 Correct 336 ms 599412 KB Output is correct
47 Correct 429 ms 596136 KB Output is correct
48 Correct 390 ms 596928 KB Output is correct
49 Correct 449 ms 629712 KB Output is correct
50 Correct 465 ms 629908 KB Output is correct
51 Correct 401 ms 597088 KB Output is correct
52 Correct 370 ms 596572 KB Output is correct
53 Correct 419 ms 596512 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 563812 KB Output is correct
2 Correct 312 ms 563868 KB Output is correct
3 Correct 285 ms 563892 KB Output is correct
4 Correct 276 ms 563884 KB Output is correct
5 Correct 297 ms 563832 KB Output is correct
6 Correct 282 ms 563808 KB Output is correct
7 Correct 298 ms 563856 KB Output is correct
8 Runtime error 673 ms 1083436 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 294 ms 563904 KB Output is correct
2 Correct 256 ms 563884 KB Output is correct
3 Correct 283 ms 563924 KB Output is correct
4 Correct 264 ms 563800 KB Output is correct
5 Correct 261 ms 563904 KB Output is correct
6 Correct 269 ms 563952 KB Output is correct
7 Correct 252 ms 563936 KB Output is correct
8 Correct 251 ms 563872 KB Output is correct
9 Correct 276 ms 563888 KB Output is correct
10 Runtime error 606 ms 1091252 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #4
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 563812 KB Output is correct
2 Correct 312 ms 563868 KB Output is correct
3 Correct 285 ms 563892 KB Output is correct
4 Correct 276 ms 563884 KB Output is correct
5 Correct 297 ms 563832 KB Output is correct
6 Correct 282 ms 563808 KB Output is correct
7 Correct 298 ms 563856 KB Output is correct
8 Runtime error 673 ms 1083436 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 563812 KB Output is correct
2 Correct 312 ms 563868 KB Output is correct
3 Correct 285 ms 563892 KB Output is correct
4 Correct 276 ms 563884 KB Output is correct
5 Correct 297 ms 563832 KB Output is correct
6 Correct 282 ms 563808 KB Output is correct
7 Correct 298 ms 563856 KB Output is correct
8 Runtime error 673 ms 1083436 KB Execution killed with signal 11
9 Halted 0 ms 0 KB -

Subtask #6
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 269 ms 563920 KB Output is correct
2 Correct 307 ms 563904 KB Output is correct
3 Correct 273 ms 563936 KB Output is correct
4 Correct 262 ms 563936 KB Output is correct
5 Correct 307 ms 563932 KB Output is correct
6 Correct 288 ms 563820 KB Output is correct
7 Correct 297 ms 563956 KB Output is correct
8 Correct 284 ms 563864 KB Output is correct
9 Correct 281 ms 563908 KB Output is correct
10 Correct 308 ms 563912 KB Output is correct
11 Correct 294 ms 563920 KB Output is correct
12 Correct 281 ms 563908 KB Output is correct
13 Correct 313 ms 563908 KB Output is correct
14 Correct 310 ms 563916 KB Output is correct
15 Correct 280 ms 563916 KB Output is correct
16 Correct 307 ms 564056 KB Output is correct
17 Correct 346 ms 563936 KB Output is correct
18 Correct 288 ms 563928 KB Output is correct
19 Correct 303 ms 564900 KB Output is correct
20 Correct 346 ms 565916 KB Output is correct
21 Correct 295 ms 565332 KB Output is correct
22 Correct 322 ms 564952 KB Output is correct
23 Correct 328 ms 564824 KB Output is correct
24 Correct 355 ms 566536 KB Output is correct
25 Correct 319 ms 566504 KB Output is correct
26 Correct 321 ms 564908 KB Output is correct
27 Correct 340 ms 564904 KB Output is correct
28 Correct 292 ms 564916 KB Output is correct
29 Correct 338 ms 566660 KB Output is correct
30 Correct 327 ms 565536 KB Output is correct
31 Correct 376 ms 567816 KB Output is correct
32 Correct 362 ms 566736 KB Output is correct
33 Correct 333 ms 566808 KB Output is correct
34 Correct 354 ms 570408 KB Output is correct
35 Correct 340 ms 570404 KB Output is correct
36 Correct 362 ms 566844 KB Output is correct
37 Correct 295 ms 566904 KB Output is correct
38 Correct 274 ms 566732 KB Output is correct
39 Correct 407 ms 595368 KB Output is correct
40 Correct 272 ms 567372 KB Output is correct
41 Correct 282 ms 571932 KB Output is correct
42 Correct 290 ms 568204 KB Output is correct
43 Correct 312 ms 570680 KB Output is correct
44 Correct 320 ms 578620 KB Output is correct
45 Correct 336 ms 580964 KB Output is correct
46 Correct 336 ms 599412 KB Output is correct
47 Correct 429 ms 596136 KB Output is correct
48 Correct 390 ms 596928 KB Output is correct
49 Correct 449 ms 629712 KB Output is correct
50 Correct 465 ms 629908 KB Output is correct
51 Correct 401 ms 597088 KB Output is correct
52 Correct 370 ms 596572 KB Output is correct
53 Correct 419 ms 596512 KB Output is correct
54 Correct 278 ms 563812 KB Output is correct
55 Correct 312 ms 563868 KB Output is correct
56 Correct 285 ms 563892 KB Output is correct
57 Correct 276 ms 563884 KB Output is correct
58 Correct 297 ms 563832 KB Output is correct
59 Correct 282 ms 563808 KB Output is correct
60 Correct 298 ms 563856 KB Output is correct
61 Runtime error 673 ms 1083436 KB Execution killed with signal 11
62 Halted 0 ms 0 KB -

Subtask #7
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 269 ms 563920 KB Output is correct
2 Correct 307 ms 563904 KB Output is correct
3 Correct 273 ms 563936 KB Output is correct
4 Correct 262 ms 563936 KB Output is correct
5 Correct 307 ms 563932 KB Output is correct
6 Correct 288 ms 563820 KB Output is correct
7 Correct 297 ms 563956 KB Output is correct
8 Correct 284 ms 563864 KB Output is correct
9 Correct 281 ms 563908 KB Output is correct
10 Correct 308 ms 563912 KB Output is correct
11 Correct 294 ms 563920 KB Output is correct
12 Correct 281 ms 563908 KB Output is correct
13 Correct 313 ms 563908 KB Output is correct
14 Correct 310 ms 563916 KB Output is correct
15 Correct 280 ms 563916 KB Output is correct
16 Correct 307 ms 564056 KB Output is correct
17 Correct 346 ms 563936 KB Output is correct
18 Correct 288 ms 563928 KB Output is correct
19 Correct 303 ms 564900 KB Output is correct
20 Correct 346 ms 565916 KB Output is correct
21 Correct 295 ms 565332 KB Output is correct
22 Correct 322 ms 564952 KB Output is correct
23 Correct 328 ms 564824 KB Output is correct
24 Correct 355 ms 566536 KB Output is correct
25 Correct 319 ms 566504 KB Output is correct
26 Correct 321 ms 564908 KB Output is correct
27 Correct 340 ms 564904 KB Output is correct
28 Correct 292 ms 564916 KB Output is correct
29 Correct 338 ms 566660 KB Output is correct
30 Correct 327 ms 565536 KB Output is correct
31 Correct 376 ms 567816 KB Output is correct
32 Correct 362 ms 566736 KB Output is correct
33 Correct 333 ms 566808 KB Output is correct
34 Correct 354 ms 570408 KB Output is correct
35 Correct 340 ms 570404 KB Output is correct
36 Correct 362 ms 566844 KB Output is correct
37 Correct 295 ms 566904 KB Output is correct
38 Correct 274 ms 566732 KB Output is correct
39 Correct 407 ms 595368 KB Output is correct
40 Correct 272 ms 567372 KB Output is correct
41 Correct 282 ms 571932 KB Output is correct
42 Correct 290 ms 568204 KB Output is correct
43 Correct 312 ms 570680 KB Output is correct
44 Correct 320 ms 578620 KB Output is correct
45 Correct 336 ms 580964 KB Output is correct
46 Correct 336 ms 599412 KB Output is correct
47 Correct 429 ms 596136 KB Output is correct
48 Correct 390 ms 596928 KB Output is correct
49 Correct 449 ms 629712 KB Output is correct
50 Correct 465 ms 629908 KB Output is correct
51 Correct 401 ms 597088 KB Output is correct
52 Correct 370 ms 596572 KB Output is correct
53 Correct 419 ms 596512 KB Output is correct
54 Correct 278 ms 563812 KB Output is correct
55 Correct 312 ms 563868 KB Output is correct
56 Correct 285 ms 563892 KB Output is correct
57 Correct 276 ms 563884 KB Output is correct
58 Correct 297 ms 563832 KB Output is correct
59 Correct 282 ms 563808 KB Output is correct
60 Correct 298 ms 563856 KB Output is correct
61 Runtime error 673 ms 1083436 KB Execution killed with signal 11
62 Halted 0 ms 0 KB -

Subtask #8
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 269 ms 563920 KB Output is correct
2 Correct 307 ms 563904 KB Output is correct
3 Correct 273 ms 563936 KB Output is correct
4 Correct 262 ms 563936 KB Output is correct
5 Correct 307 ms 563932 KB Output is correct
6 Correct 288 ms 563820 KB Output is correct
7 Correct 297 ms 563956 KB Output is correct
8 Correct 284 ms 563864 KB Output is correct
9 Correct 281 ms 563908 KB Output is correct
10 Correct 308 ms 563912 KB Output is correct
11 Correct 294 ms 563920 KB Output is correct
12 Correct 281 ms 563908 KB Output is correct
13 Correct 313 ms 563908 KB Output is correct
14 Correct 310 ms 563916 KB Output is correct
15 Correct 280 ms 563916 KB Output is correct
16 Correct 307 ms 564056 KB Output is correct
17 Correct 346 ms 563936 KB Output is correct
18 Correct 288 ms 563928 KB Output is correct
19 Correct 303 ms 564900 KB Output is correct
20 Correct 346 ms 565916 KB Output is correct
21 Correct 295 ms 565332 KB Output is correct
22 Correct 322 ms 564952 KB Output is correct
23 Correct 328 ms 564824 KB Output is correct
24 Correct 355 ms 566536 KB Output is correct
25 Correct 319 ms 566504 KB Output is correct
26 Correct 321 ms 564908 KB Output is correct
27 Correct 340 ms 564904 KB Output is correct
28 Correct 292 ms 564916 KB Output is correct
29 Correct 338 ms 566660 KB Output is correct
30 Correct 327 ms 565536 KB Output is correct
31 Correct 376 ms 567816 KB Output is correct
32 Correct 362 ms 566736 KB Output is correct
33 Correct 333 ms 566808 KB Output is correct
34 Correct 354 ms 570408 KB Output is correct
35 Correct 340 ms 570404 KB Output is correct
36 Correct 362 ms 566844 KB Output is correct
37 Correct 295 ms 566904 KB Output is correct
38 Correct 274 ms 566732 KB Output is correct
39 Correct 407 ms 595368 KB Output is correct
40 Correct 272 ms 567372 KB Output is correct
41 Correct 282 ms 571932 KB Output is correct
42 Correct 290 ms 568204 KB Output is correct
43 Correct 312 ms 570680 KB Output is correct
44 Correct 320 ms 578620 KB Output is correct
45 Correct 336 ms 580964 KB Output is correct
46 Correct 336 ms 599412 KB Output is correct
47 Correct 429 ms 596136 KB Output is correct
48 Correct 390 ms 596928 KB Output is correct
49 Correct 449 ms 629712 KB Output is correct
50 Correct 465 ms 629908 KB Output is correct
51 Correct 401 ms 597088 KB Output is correct
52 Correct 370 ms 596572 KB Output is correct
53 Correct 419 ms 596512 KB Output is correct
54 Correct 278 ms 563812 KB Output is correct
55 Correct 312 ms 563868 KB Output is correct
56 Correct 285 ms 563892 KB Output is correct
57 Correct 276 ms 563884 KB Output is correct
58 Correct 297 ms 563832 KB Output is correct
59 Correct 282 ms 563808 KB Output is correct
60 Correct 298 ms 563856 KB Output is correct
61 Runtime error 673 ms 1083436 KB Execution killed with signal 11
62 Halted 0 ms 0 KB -