foo.cc:12:1: error: expected initializer before 'int'
   12 | int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, 1, -1};//八个方向，从左往右分别是上 下 左 右 左上 右上 右下 左下，拿相同下标的dx dy搭配可以让当前坐标往特
      | ^~~
foo.cc:12:40: error: expected unqualified-id before ',' token
   12 | int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, 1, -1};//八个方向，从左往右分别是上 下 左 右 左上 右上 右下 左下，拿相同下标的dx dy搭配可以让当前坐标往特
      |                                        ^
foo.cc:12:48: error: expected constructor, destructor, or type conversion before '=' token
   12 | int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, 1, -1};//八个方向，从左往右分别是上 下 左 右 左上 右上 右下 左下，拿相同下标的dx dy搭配可以让当前坐标往特
      |                                                ^
foo.cc: In function 'void bfs()':
foo.cc:28:23: error: 'dx' was not declared in this scope; did you mean 'nx'?
   28 |    int nx = t.first + dx[i];
      |                       ^~
      |                       nx
foo.cc:29:24: error: 'dy' was not declared in this scope; did you mean 'ny'?
   29 |    int ny = t.second + dy[i];
      |                        ^~
      |                        ny
foo.cc:36:50: error: 'maze' was not declared in this scope
   36 |     if(nx < 0 || nx >= n || ny < 0 || ny >= m || maze[nx][ny] == 'X') break;//这里说明受阻了，飞镖停下来
      |                                                  ^~~~
foo.cc:46:23: error: 'dx' was not declared in this scope; did you mean 'nx'?
   46 |    int nx = t.first + dx[i];
      |                       ^~
      |                       nx
foo.cc:47:24: error: 'dy' was not declared in this scope; did you mean 'ny'?
   47 |    int ny = t.second + dy[i];
      |                        ^~
      |                        ny
foo.cc:48:49: error: 'maze' was not declared in this scope
   48 |    if(nx >= 0 && nx < n && ny >= 0 && ny < m && maze[nx][ny] != 'X' && !vis[nx][ny]){
      |                                                 ^~~~
foo.cc: In function 'int main()':
foo.cc:64:10: error: 'maze' was not declared in this scope
   64 |   cin >> maze[i];
      |          ^~~~

[Hydro](https://hydro.ac)提供评测服务