View Compilation Error

0_0_34020377_9745.cpp:21:15: error: redefinition of 'int dis [55][55]'
 int dis[55][55];
               ^
0_0_34020377_9745.cpp:7:5: note: 'int dis [55][55]' previously declared here
 int dis[55][55];
     ^
0_0_34020377_9745.cpp: In function 'int dfs(int, int)':
0_0_34020377_9745.cpp:54:22: error: 'dir' was not declared in this scope
             int nx=x+dir[i][0];
                      ^