View Compilation Error

0_0_29980133_21620.cpp: In function 'int bfs()':
0_0_29980133_21620.cpp:83:63: error: expected ']' before numeric constant
                         if (!(nq2.key & (1 << tra(a[nq2.i][nq 2.j]))))
                                                               ^
0_0_29980133_21620.cpp:83:59: error: no match for 'operator[]' (operand types are 'char [110]' and 'node')
                         if (!(nq2.key & (1 << tra(a[nq2.i][nq 2.j]))))
                                                           ^
0_0_29980133_21620.cpp:83:66: error: expected ')' before ']' token
                         if (!(nq2.key & (1 << tra(a[nq2.i][nq 2.j]))))
                                                                  ^
0_0_29980133_21620.cpp:84:37: error: expected ')' before ';' token
                             continue;
                                     ^
0_0_29980133_21620.cpp:84:37: error: expected ')' before ';' token