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Submission #439927

# Submission time Handle Problem Language Result Execution time Memory
439927 2021-07-01T08:26:50 Z elazarkoren Awesome Arrowland Adventure (eJOI19_adventure) C++17
0 / 100
 1 ms 204 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#define chkmin(a, b) a = min(a, b)
using namespace std;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<bool> vb;
typedef vector<vb> vvb;

const int infinity = 1e9;

int ans = infinity;

int dir_x[] = {-1, 0, 1, 0};
int dir_y[] = {0, 1, 0, -1};
int n, m;

void Dfs(vvi &graph, int x, int y, vvb &visited, int count) {
    if (x < 0 || x >= n || y < 0 || y >= m) return;
    if (visited[x][y]) return;
    if (x == n - 1 && y == m - 1) {
        chkmin(ans, count);
        return;
    }
    if (graph[x][y] == 4) return;
    visited[x][y] = true;
    for (int i = 0; i < 4; i++) {
        Dfs(graph, x + dir_x[graph[x][y]], y + dir_y[graph[x][y]], visited, count + i);
        graph[x][y]++;
        graph[x][y] %= 4;
    }
    visited[x][y] = false;
}

int main() {
    cin >> n >> m;
    vvi graph(n, vi(m));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            char c;
            cin >> c;
            if (c == 'X') {
                graph[i][j] = 4;
            } else if (c == 'S') {
                graph[i][j] = 2;
            } else if (c == 'W') {
                graph[i][j] = 3;
            } else if (c == 'E') {
                graph[i][j] = 1;
            }
        }
    }
    vvb visited(n, vb(m));
    Dfs(graph, 0, 0, visited, 0);
    cout << ans;
    return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Incorrect 1 ms 204 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 50.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 204 KB Output isn't correct
2 Halted 0 ms 0 KB -