View Compilation Error

0_0_34019753_2334.cpp:36:21: error: stray '\' in program
                     ll t = mat[i][i]\mat[j][i]%mod;
                     ^
0_0_34019753_2334.cpp: In member function 'll Matrix::det(int)':
0_0_34019753_2334.cpp:36:38: error: expected ',' or ';' before 'mat'
                     ll t = mat[i][i]\mat[j][i]%mod;
                                      ^