View Compilation Error

0_0_39226036_25821.cpp: In function 'void bfs(int, int)':
0_0_39226036_25821.cpp:37:43: error: 'ny' was not declared in this scope; did you mean 'nx'?
   37 |                         if(!a[nx]&&nx>=0&&ny<=100010){
      |                                           ^~
      |                                           nx