View Compilation Error

0_0_37577530_4596.cpp: In function 'int g(int, int, int, int)':
0_0_37577530_4596.cpp:9:5: error: 'bs' was not declared in this scope
  if(bs[a][x][0]==bs[b][y][0]&&bs[a][x][1]==bs[b][y][1]&&bs[a][x][2]==bs[b][y][2])
     ^
0_0_37577530_4596.cpp:13:5: error: 'bs' was not declared in this scope
  if(bs[a][x][1]==bs[b][y][0]&&bs[a][x][2]==bs[b][y][1])
     ^
0_0_37577530_4596.cpp:17:5: error: 'bs' was not declared in this scope
  if(bs[a][x][2]==bs[b][y][0])
     ^