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Submission #976185

# Submission time Handle Problem Language Result Execution time Memory
976185 2024-05-06T09:19:01 Z vjudge1 Awesome Arrowland Adventure (eJOI19_adventure) C++17
100 / 100
 47 ms 4848 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long

const int N = 5e2 + 5;

char grid[N][N];

int n, m;

vector < vector < bool > > vis ( N, vector < bool > ( N, 0));

priority_queue < pair < int, pair < int, int >>, vector < pair < int, pair < int, int >>>, greater < pair < int, pair < int, int >>>> pq;

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

    cin >> n >> m;

    for ( int i = 1; i <= n; i++){
        for ( int j = 1; j <= m; j++){
            cin >> grid[i][j];
        }
    }

    pq.push({0, {1, 1}});

    while ( !pq.empty()){
        int x = pq.top().second.first, y = pq.top().second.second, val = pq.top().first;
        pq.pop();

        if ( x == n && y == m ){
            cout << val << endl;
            return 0;
        }

        if ( vis[x][y] ) continue; vis[x][y] = 1;

        if ( grid[x][y] == 'N'){
            if ( x - 1 >= 1 && !vis[x-1][y] && (( grid[x - 1][y] != 'X' && !( x - 1 == n && y == m )) || ( x - 1 == n && y == m )) ) pq.push({val, {x - 1, y}});
            if ( y + 1 <= m && !vis[x][y + 1] && (( grid[x][y+1] != 'X' && !( x == n && y + 1 == m )) || ( x == n && y + 1 == m)) ) pq.push({val + 1, {x, y + 1}});
            if ( x + 1 <= n && !vis[x + 1][y] && (( grid[x + 1][y] != 'X' && !( x + 1 == n && y == m )) || ( x + 1 == n && y == m)) ) pq.push({val + 2, {x + 1, y}});
            if ( y - 1 >= 1 && !vis[x][y - 1] && (( grid[x][y - 1] != 'X' && !( x == n && y - 1 == m )) || ( x == n && y - 1 == m )) ) pq.push({val + 3, {x, y - 1}});
        }

        else if ( grid[x][y] == 'E'){
            if ( x - 1 >= 1 && !vis[x-1][y] && (( grid[x - 1][y] != 'X' && !( x - 1 == n && y == m )) || ( x - 1 == n && y == m )) ) pq.push({val + 3, {x - 1, y}});
            if ( y + 1 <= m && !vis[x][y + 1]&& (( grid[x][y+1] != 'X' && !( x == n && y + 1 == m )) || ( x == n && y + 1 == m))) pq.push({val, {x, y + 1}});
            if ( x + 1 <= n && !vis[x + 1][y]&& (( grid[x + 1][y] != 'X' && !( x + 1 == n && y == m )) || ( x + 1 == n && y == m))) pq.push({val + 1, {x + 1, y}});
            if ( y - 1 >= 1 && !vis[x][y - 1] && (( grid[x][y - 1] != 'X' && !( x == n && y - 1 == m )) || ( x == n && y - 1 == m ))) pq.push({val + 2, {x, y - 1}});
        }
        else if ( grid[x][y] == 'S'){
            if ( x - 1 >= 1 && !vis[x-1][y]&& (( grid[x - 1][y] != 'X' && !( x - 1 == n && y == m )) || ( x - 1 == n && y == m ))) pq.push({val + 2, {x - 1, y}});
            if ( y + 1 <= m && !vis[x][y + 1]&& (( grid[x][y+1] != 'X' && !( x == n && y + 1 == m )) || ( x == n && y + 1 == m))) pq.push({val + 3, {x, y + 1}});
            if ( x + 1 <= n && !vis[x + 1][y]&& (( grid[x + 1][y] != 'X' && !( x + 1 == n && y == m )) || ( x + 1 == n && y == m))) pq.push({val, {x + 1, y}});
            if ( y - 1 >= 1 && !vis[x][y - 1]&& (( grid[x][y - 1] != 'X' && !( x == n && y - 1 == m )) || ( x == n && y - 1 == m )) ) pq.push({val + 1, {x, y - 1}});
        }
        else if ( grid[x][y] == 'W'){
            if ( x - 1 >= 1 && !vis[x-1][y]&& (( grid[x - 1][y] != 'X' && !( x - 1 == n && y == m )) || ( x - 1 == n && y == m ))) pq.push({val + 1, {x - 1, y}});
            if ( y + 1 <= m && !vis[x][y + 1]&& (( grid[x][y+1] != 'X' && !( x == n && y + 1 == m )) || ( x == n && y + 1 == m))) pq.push({val + 2, {x, y + 1}});
            if ( x + 1 <= n && !vis[x + 1][y]&& (( grid[x + 1][y] != 'X' && !( x + 1 == n && y == m )) || ( x + 1 == n && y == m))) pq.push({val + 3, {x + 1, y}});
            if ( y - 1 >= 1 && !vis[x][y - 1]&& (( grid[x][y - 1] != 'X' && !( x == n && y - 1 == m )) || ( x == n && y - 1 == m ))) pq.push({val, {x, y - 1}});
        }
    }

    cout << -1 << endl;
}

Compilation message

adventure.cpp: In function 'int main()':
adventure.cpp:37:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   37 |         if ( vis[x][y] ) continue; vis[x][y] = 1;
      |         ^~
adventure.cpp:37:36: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   37 |         if ( vis[x][y] ) continue; vis[x][y] = 1;
      |                                    ^~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 412 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 412 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #5
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 412 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 600 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 344 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 4 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 5 ms 348 KB Output is correct
38 Correct 1 ms 856 KB Output is correct
39 Correct 47 ms 808 KB Output is correct
40 Correct 47 ms 604 KB Output is correct
41 Correct 3 ms 600 KB Output is correct
42 Correct 46 ms 600 KB Output is correct
43 Correct 41 ms 4848 KB Output is correct
44 Correct 3 ms 604 KB Output is correct