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Submission #443014

# Submission time Handle Problem Language Result Execution time Memory
443014 2021-07-09T13:23:50 Z LucaIlie Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 108 ms 22200 KB 
#include <stdio.h>
#include <queue>
#include <vector>
#include <ctype.h>

#define MAX_N 500
#define DIR 4

using namespace std;

struct muchie {
    int nod, cost;
    bool operator < (const muchie &aux) const {
        return cost > aux.cost;
    }
};

int dist[MAX_N * MAX_N], dir[MAX_N + 2][MAX_N + 2];
int dl[DIR] = { -1, 0, 1, 0 }, dc[DIR] = { 0, 1, 0, -1 };
vector <muchie> muchii[MAX_N * MAX_N];
priority_queue <muchie> pq;

char nextChar() {
    char ch;

    ch = getc( stdin );
    while ( !isalpha( ch ) )
        ch = getc( stdin );

    return ch;
}

int main() {
    char ch;
    int n, m, l, c, d, i;
    struct muchie crt, next;

    scanf( "%d%d", &n, &m );
    for ( l = 1; l <= n; l++ ) {
        for ( c = 1; c <= m; c++ ) {
            ch = nextChar();
            if ( ch == 'N' )
                dir[l][c] = 0;
            else if ( ch == 'E' )
                dir[l][c] = 1;
            else if ( ch == 'S' )
                dir[l][c] = 2;
            else if ( ch == 'W' )
                dir[l][c] = 3;
            else
                dir[l][c] = 4;
        }
    }

    for ( l = 1; l <= n; l++ )
        dir[l][0] = dir[l][m + 1] = -1;
    for ( c = 1; c <= m; c++ )
        dir[0][c] = dir[n + 1][c] = -1;


    for ( l = 1; l <= n; l++ ) {
        for ( c = 1; c <= m; c++ ) {
            if ( dir[l][c] < 4 ) {
                for ( d = 0; d < DIR; d++ ) {
                    if ( dir[l + dl[d]][c + dc[d]] >= 0 )
                        muchii[(l - 1) * m + c - 1].push_back( { (l - 1 + dl[d]) * m + c - 1 + dc[d], (d - dir[l][c] + DIR) % DIR } );
                }
            }
        }
    }

    for ( i = 0; i < n * m; i++ )
        dist[i] = -1;

    pq.push( { 0, 0 } );
    while ( !pq.empty() ) {
        crt = pq.top();
        pq.pop();
        if ( dist[crt.nod] == -1 ) {
            dist[crt.nod] = crt.cost;
            for ( i = 0; i < muchii[crt.nod].size(); i++ ) {
                next = muchii[crt.nod][i];
                if ( dist[next.nod] == -1 )
                    pq.push( { next.nod, dist[crt.nod] + next.cost } );
            }
        }
    }

    printf( "%d ", dist[n * m - 1] );

    return 0;
}

Compilation message

adventure.cpp: In function 'int main()':
adventure.cpp:81:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |             for ( i = 0; i < muchii[crt.nod].size(); i++ ) {
      |                          ~~^~~~~~~~~~~~~~~~~~~~~~~~
adventure.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     scanf( "%d%d", &n, &m );
      |     ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6092 KB Output is correct
2 Correct 4 ms 6092 KB Output is correct
3 Correct 4 ms 6156 KB Output is correct
4 Correct 4 ms 6092 KB Output is correct
5 Correct 4 ms 6156 KB Output is correct
6 Correct 4 ms 6092 KB Output is correct
7 Correct 5 ms 6148 KB Output is correct
8 Correct 4 ms 6092 KB Output is correct
9 Correct 4 ms 6092 KB Output is correct
10 Correct 4 ms 6092 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6092 KB Output is correct
2 Correct 4 ms 6092 KB Output is correct
3 Correct 4 ms 6156 KB Output is correct
4 Correct 4 ms 6092 KB Output is correct
5 Correct 4 ms 6156 KB Output is correct
6 Correct 4 ms 6092 KB Output is correct
7 Correct 5 ms 6148 KB Output is correct
8 Correct 4 ms 6092 KB Output is correct
9 Correct 4 ms 6092 KB Output is correct
10 Correct 4 ms 6092 KB Output is correct
11 Correct 4 ms 6092 KB Output is correct
12 Correct 4 ms 6092 KB Output is correct
13 Correct 4 ms 6092 KB Output is correct
14 Correct 5 ms 6108 KB Output is correct
15 Correct 4 ms 6092 KB Output is correct
16 Correct 5 ms 6092 KB Output is correct
17 Correct 4 ms 6092 KB Output is correct
18 Correct 4 ms 6092 KB Output is correct
19 Correct 4 ms 6092 KB Output is correct
20 Correct 4 ms 6092 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6092 KB Output is correct
2 Correct 4 ms 6092 KB Output is correct
3 Correct 4 ms 6156 KB Output is correct
4 Correct 5 ms 6104 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 6220 KB Output is correct
2 Correct 4 ms 6092 KB Output is correct
3 Correct 4 ms 6092 KB Output is correct
4 Correct 4 ms 6092 KB Output is correct
5 Correct 6 ms 6092 KB Output is correct
6 Correct 4 ms 6092 KB Output is correct
7 Correct 4 ms 6092 KB Output is correct
8 Correct 5 ms 6220 KB Output is correct
9 Correct 4 ms 6092 KB Output is correct
10 Correct 4 ms 6092 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 6092 KB Output is correct
2 Correct 4 ms 6092 KB Output is correct
3 Correct 4 ms 6156 KB Output is correct
4 Correct 4 ms 6092 KB Output is correct
5 Correct 4 ms 6156 KB Output is correct
6 Correct 4 ms 6092 KB Output is correct
7 Correct 5 ms 6148 KB Output is correct
8 Correct 4 ms 6092 KB Output is correct
9 Correct 4 ms 6092 KB Output is correct
10 Correct 4 ms 6092 KB Output is correct
11 Correct 4 ms 6092 KB Output is correct
12 Correct 4 ms 6092 KB Output is correct
13 Correct 4 ms 6092 KB Output is correct
14 Correct 5 ms 6108 KB Output is correct
15 Correct 4 ms 6092 KB Output is correct
16 Correct 5 ms 6092 KB Output is correct
17 Correct 4 ms 6092 KB Output is correct
18 Correct 4 ms 6092 KB Output is correct
19 Correct 4 ms 6092 KB Output is correct
20 Correct 4 ms 6092 KB Output is correct
21 Correct 4 ms 6092 KB Output is correct
22 Correct 4 ms 6092 KB Output is correct
23 Correct 4 ms 6156 KB Output is correct
24 Correct 5 ms 6104 KB Output is correct
25 Correct 5 ms 6220 KB Output is correct
26 Correct 4 ms 6092 KB Output is correct
27 Correct 4 ms 6092 KB Output is correct
28 Correct 4 ms 6092 KB Output is correct
29 Correct 6 ms 6092 KB Output is correct
30 Correct 4 ms 6092 KB Output is correct
31 Correct 4 ms 6092 KB Output is correct
32 Correct 5 ms 6220 KB Output is correct
33 Correct 4 ms 6092 KB Output is correct
34 Correct 4 ms 6092 KB Output is correct
35 Correct 10 ms 7244 KB Output is correct
36 Correct 4 ms 6220 KB Output is correct
37 Correct 12 ms 7500 KB Output is correct
38 Correct 10 ms 8396 KB Output is correct
39 Correct 95 ms 17788 KB Output is correct
40 Correct 83 ms 17776 KB Output is correct
41 Correct 40 ms 17848 KB Output is correct
42 Correct 85 ms 17768 KB Output is correct
43 Correct 108 ms 22200 KB Output is correct
44 Correct 51 ms 17732 KB Output is correct