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Submission #738891

# Submission time Handle Problem Language Result Execution time Memory
738891 2023-05-09T15:24:58 Z He_Huanglu Maze (JOI23_ho_t3) C++17
8 / 100
 662 ms 1091036 KB 
#include <bits/stdc++.h>
#define ii pair<int, int>
#define fi first
#define se second
using namespace std;

const int N = 6e6 + 3;
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 255 ms 563788 KB Output is correct
2 Correct 260 ms 563808 KB Output is correct
3 Correct 252 ms 563932 KB Output is correct
4 Correct 261 ms 563916 KB Output is correct
5 Correct 265 ms 563980 KB Output is correct
6 Correct 249 ms 563848 KB Output is correct
7 Correct 256 ms 563924 KB Output is correct
8 Correct 259 ms 563932 KB Output is correct
9 Correct 253 ms 563904 KB Output is correct
10 Correct 252 ms 563904 KB Output is correct
11 Correct 256 ms 563884 KB Output is correct
12 Correct 249 ms 563844 KB Output is correct
13 Correct 259 ms 563896 KB Output is correct
14 Correct 255 ms 563912 KB Output is correct
15 Correct 248 ms 563876 KB Output is correct
16 Correct 250 ms 564008 KB Output is correct
17 Correct 280 ms 563856 KB Output is correct
18 Correct 252 ms 563880 KB Output is correct
19 Correct 263 ms 564900 KB Output is correct
20 Correct 269 ms 565920 KB Output is correct
21 Correct 254 ms 565320 KB Output is correct
22 Correct 262 ms 564960 KB Output is correct
23 Correct 273 ms 564940 KB Output is correct
24 Correct 267 ms 566472 KB Output is correct
25 Correct 280 ms 566496 KB Output is correct
26 Correct 335 ms 564904 KB Output is correct
27 Correct 271 ms 564860 KB Output is correct
28 Correct 260 ms 564808 KB Output is correct
29 Correct 276 ms 566672 KB Output is correct
30 Correct 268 ms 565688 KB Output is correct
31 Correct 261 ms 567756 KB Output is correct
32 Correct 267 ms 566704 KB Output is correct
33 Correct 263 ms 566728 KB Output is correct
34 Correct 291 ms 570376 KB Output is correct
35 Correct 272 ms 570376 KB Output is correct
36 Correct 285 ms 566820 KB Output is correct
37 Correct 294 ms 566796 KB Output is correct
38 Correct 260 ms 566764 KB Output is correct
39 Correct 419 ms 595392 KB Output is correct
40 Correct 262 ms 567552 KB Output is correct
41 Correct 280 ms 571788 KB Output is correct
42 Correct 292 ms 568396 KB Output is correct
43 Correct 282 ms 570576 KB Output is correct
44 Correct 314 ms 578416 KB Output is correct
45 Correct 312 ms 581052 KB Output is correct
46 Correct 315 ms 599284 KB Output is correct
47 Correct 389 ms 596060 KB Output is correct
48 Correct 384 ms 596628 KB Output is correct
49 Correct 427 ms 629860 KB Output is correct
50 Correct 452 ms 630016 KB Output is correct
51 Correct 371 ms 597068 KB Output is correct
52 Correct 382 ms 596448 KB Output is correct
53 Correct 384 ms 596536 KB Output is correct

Subtask #2
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 261 ms 563904 KB Output is correct
2 Correct 262 ms 563972 KB Output is correct
3 Correct 261 ms 563792 KB Output is correct
4 Correct 261 ms 563920 KB Output is correct
5 Correct 253 ms 564040 KB Output is correct
6 Correct 256 ms 563788 KB Output is correct
7 Correct 257 ms 563788 KB Output is correct
8 Runtime error 662 ms 1091024 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 264 ms 563844 KB Output is correct
2 Correct 257 ms 563904 KB Output is correct
3 Correct 261 ms 563900 KB Output is correct
4 Correct 274 ms 563904 KB Output is correct
5 Correct 259 ms 563788 KB Output is correct
6 Correct 275 ms 563828 KB Output is correct
7 Correct 252 ms 563824 KB Output is correct
8 Correct 252 ms 563904 KB Output is correct
9 Correct 268 ms 563852 KB Output is correct
10 Runtime error 643 ms 1091036 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 261 ms 563904 KB Output is correct
2 Correct 262 ms 563972 KB Output is correct
3 Correct 261 ms 563792 KB Output is correct
4 Correct 261 ms 563920 KB Output is correct
5 Correct 253 ms 564040 KB Output is correct
6 Correct 256 ms 563788 KB Output is correct
7 Correct 257 ms 563788 KB Output is correct
8 Runtime error 662 ms 1091024 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 261 ms 563904 KB Output is correct
2 Correct 262 ms 563972 KB Output is correct
3 Correct 261 ms 563792 KB Output is correct
4 Correct 261 ms 563920 KB Output is correct
5 Correct 253 ms 564040 KB Output is correct
6 Correct 256 ms 563788 KB Output is correct
7 Correct 257 ms 563788 KB Output is correct
8 Runtime error 662 ms 1091024 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 255 ms 563788 KB Output is correct
2 Correct 260 ms 563808 KB Output is correct
3 Correct 252 ms 563932 KB Output is correct
4 Correct 261 ms 563916 KB Output is correct
5 Correct 265 ms 563980 KB Output is correct
6 Correct 249 ms 563848 KB Output is correct
7 Correct 256 ms 563924 KB Output is correct
8 Correct 259 ms 563932 KB Output is correct
9 Correct 253 ms 563904 KB Output is correct
10 Correct 252 ms 563904 KB Output is correct
11 Correct 256 ms 563884 KB Output is correct
12 Correct 249 ms 563844 KB Output is correct
13 Correct 259 ms 563896 KB Output is correct
14 Correct 255 ms 563912 KB Output is correct
15 Correct 248 ms 563876 KB Output is correct
16 Correct 250 ms 564008 KB Output is correct
17 Correct 280 ms 563856 KB Output is correct
18 Correct 252 ms 563880 KB Output is correct
19 Correct 263 ms 564900 KB Output is correct
20 Correct 269 ms 565920 KB Output is correct
21 Correct 254 ms 565320 KB Output is correct
22 Correct 262 ms 564960 KB Output is correct
23 Correct 273 ms 564940 KB Output is correct
24 Correct 267 ms 566472 KB Output is correct
25 Correct 280 ms 566496 KB Output is correct
26 Correct 335 ms 564904 KB Output is correct
27 Correct 271 ms 564860 KB Output is correct
28 Correct 260 ms 564808 KB Output is correct
29 Correct 276 ms 566672 KB Output is correct
30 Correct 268 ms 565688 KB Output is correct
31 Correct 261 ms 567756 KB Output is correct
32 Correct 267 ms 566704 KB Output is correct
33 Correct 263 ms 566728 KB Output is correct
34 Correct 291 ms 570376 KB Output is correct
35 Correct 272 ms 570376 KB Output is correct
36 Correct 285 ms 566820 KB Output is correct
37 Correct 294 ms 566796 KB Output is correct
38 Correct 260 ms 566764 KB Output is correct
39 Correct 419 ms 595392 KB Output is correct
40 Correct 262 ms 567552 KB Output is correct
41 Correct 280 ms 571788 KB Output is correct
42 Correct 292 ms 568396 KB Output is correct
43 Correct 282 ms 570576 KB Output is correct
44 Correct 314 ms 578416 KB Output is correct
45 Correct 312 ms 581052 KB Output is correct
46 Correct 315 ms 599284 KB Output is correct
47 Correct 389 ms 596060 KB Output is correct
48 Correct 384 ms 596628 KB Output is correct
49 Correct 427 ms 629860 KB Output is correct
50 Correct 452 ms 630016 KB Output is correct
51 Correct 371 ms 597068 KB Output is correct
52 Correct 382 ms 596448 KB Output is correct
53 Correct 384 ms 596536 KB Output is correct
54 Correct 261 ms 563904 KB Output is correct
55 Correct 262 ms 563972 KB Output is correct
56 Correct 261 ms 563792 KB Output is correct
57 Correct 261 ms 563920 KB Output is correct
58 Correct 253 ms 564040 KB Output is correct
59 Correct 256 ms 563788 KB Output is correct
60 Correct 257 ms 563788 KB Output is correct
61 Runtime error 662 ms 1091024 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 255 ms 563788 KB Output is correct
2 Correct 260 ms 563808 KB Output is correct
3 Correct 252 ms 563932 KB Output is correct
4 Correct 261 ms 563916 KB Output is correct
5 Correct 265 ms 563980 KB Output is correct
6 Correct 249 ms 563848 KB Output is correct
7 Correct 256 ms 563924 KB Output is correct
8 Correct 259 ms 563932 KB Output is correct
9 Correct 253 ms 563904 KB Output is correct
10 Correct 252 ms 563904 KB Output is correct
11 Correct 256 ms 563884 KB Output is correct
12 Correct 249 ms 563844 KB Output is correct
13 Correct 259 ms 563896 KB Output is correct
14 Correct 255 ms 563912 KB Output is correct
15 Correct 248 ms 563876 KB Output is correct
16 Correct 250 ms 564008 KB Output is correct
17 Correct 280 ms 563856 KB Output is correct
18 Correct 252 ms 563880 KB Output is correct
19 Correct 263 ms 564900 KB Output is correct
20 Correct 269 ms 565920 KB Output is correct
21 Correct 254 ms 565320 KB Output is correct
22 Correct 262 ms 564960 KB Output is correct
23 Correct 273 ms 564940 KB Output is correct
24 Correct 267 ms 566472 KB Output is correct
25 Correct 280 ms 566496 KB Output is correct
26 Correct 335 ms 564904 KB Output is correct
27 Correct 271 ms 564860 KB Output is correct
28 Correct 260 ms 564808 KB Output is correct
29 Correct 276 ms 566672 KB Output is correct
30 Correct 268 ms 565688 KB Output is correct
31 Correct 261 ms 567756 KB Output is correct
32 Correct 267 ms 566704 KB Output is correct
33 Correct 263 ms 566728 KB Output is correct
34 Correct 291 ms 570376 KB Output is correct
35 Correct 272 ms 570376 KB Output is correct
36 Correct 285 ms 566820 KB Output is correct
37 Correct 294 ms 566796 KB Output is correct
38 Correct 260 ms 566764 KB Output is correct
39 Correct 419 ms 595392 KB Output is correct
40 Correct 262 ms 567552 KB Output is correct
41 Correct 280 ms 571788 KB Output is correct
42 Correct 292 ms 568396 KB Output is correct
43 Correct 282 ms 570576 KB Output is correct
44 Correct 314 ms 578416 KB Output is correct
45 Correct 312 ms 581052 KB Output is correct
46 Correct 315 ms 599284 KB Output is correct
47 Correct 389 ms 596060 KB Output is correct
48 Correct 384 ms 596628 KB Output is correct
49 Correct 427 ms 629860 KB Output is correct
50 Correct 452 ms 630016 KB Output is correct
51 Correct 371 ms 597068 KB Output is correct
52 Correct 382 ms 596448 KB Output is correct
53 Correct 384 ms 596536 KB Output is correct
54 Correct 261 ms 563904 KB Output is correct
55 Correct 262 ms 563972 KB Output is correct
56 Correct 261 ms 563792 KB Output is correct
57 Correct 261 ms 563920 KB Output is correct
58 Correct 253 ms 564040 KB Output is correct
59 Correct 256 ms 563788 KB Output is correct
60 Correct 257 ms 563788 KB Output is correct
61 Runtime error 662 ms 1091024 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 255 ms 563788 KB Output is correct
2 Correct 260 ms 563808 KB Output is correct
3 Correct 252 ms 563932 KB Output is correct
4 Correct 261 ms 563916 KB Output is correct
5 Correct 265 ms 563980 KB Output is correct
6 Correct 249 ms 563848 KB Output is correct
7 Correct 256 ms 563924 KB Output is correct
8 Correct 259 ms 563932 KB Output is correct
9 Correct 253 ms 563904 KB Output is correct
10 Correct 252 ms 563904 KB Output is correct
11 Correct 256 ms 563884 KB Output is correct
12 Correct 249 ms 563844 KB Output is correct
13 Correct 259 ms 563896 KB Output is correct
14 Correct 255 ms 563912 KB Output is correct
15 Correct 248 ms 563876 KB Output is correct
16 Correct 250 ms 564008 KB Output is correct
17 Correct 280 ms 563856 KB Output is correct
18 Correct 252 ms 563880 KB Output is correct
19 Correct 263 ms 564900 KB Output is correct
20 Correct 269 ms 565920 KB Output is correct
21 Correct 254 ms 565320 KB Output is correct
22 Correct 262 ms 564960 KB Output is correct
23 Correct 273 ms 564940 KB Output is correct
24 Correct 267 ms 566472 KB Output is correct
25 Correct 280 ms 566496 KB Output is correct
26 Correct 335 ms 564904 KB Output is correct
27 Correct 271 ms 564860 KB Output is correct
28 Correct 260 ms 564808 KB Output is correct
29 Correct 276 ms 566672 KB Output is correct
30 Correct 268 ms 565688 KB Output is correct
31 Correct 261 ms 567756 KB Output is correct
32 Correct 267 ms 566704 KB Output is correct
33 Correct 263 ms 566728 KB Output is correct
34 Correct 291 ms 570376 KB Output is correct
35 Correct 272 ms 570376 KB Output is correct
36 Correct 285 ms 566820 KB Output is correct
37 Correct 294 ms 566796 KB Output is correct
38 Correct 260 ms 566764 KB Output is correct
39 Correct 419 ms 595392 KB Output is correct
40 Correct 262 ms 567552 KB Output is correct
41 Correct 280 ms 571788 KB Output is correct
42 Correct 292 ms 568396 KB Output is correct
43 Correct 282 ms 570576 KB Output is correct
44 Correct 314 ms 578416 KB Output is correct
45 Correct 312 ms 581052 KB Output is correct
46 Correct 315 ms 599284 KB Output is correct
47 Correct 389 ms 596060 KB Output is correct
48 Correct 384 ms 596628 KB Output is correct
49 Correct 427 ms 629860 KB Output is correct
50 Correct 452 ms 630016 KB Output is correct
51 Correct 371 ms 597068 KB Output is correct
52 Correct 382 ms 596448 KB Output is correct
53 Correct 384 ms 596536 KB Output is correct
54 Correct 261 ms 563904 KB Output is correct
55 Correct 262 ms 563972 KB Output is correct
56 Correct 261 ms 563792 KB Output is correct
57 Correct 261 ms 563920 KB Output is correct
58 Correct 253 ms 564040 KB Output is correct
59 Correct 256 ms 563788 KB Output is correct
60 Correct 257 ms 563788 KB Output is correct
61 Runtime error 662 ms 1091024 KB Execution killed with signal 11
62 Halted 0 ms 0 KB -