View Compilation Error

0_0_11676882_29372.cpp:15: error: invalid function declaration
0_0_11676882_29372.cpp: In function `int find(int, int, int)':
0_0_11676882_29372.cpp:28: error: `dir' undeclared (first use this function)
0_0_11676882_29372.cpp:28: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11676882_29372.cpp: In function `void bfs(int, int)':
0_0_11676882_29372.cpp:51: error: `dir' undeclared (first use this function)