View Compilation Error

0_0_30696500_28141.cpp: In member function 'Matrix Matrix::operator*(Matrix&)':
0_0_30696500_28141.cpp:15:61: error: expected primary-expression before '%' token
             res.a[i][j]=(res.a[i][j]+1ll*a[i][k]*o.a[k][j])(%mod-1);
                                                             ^
0_0_30696500_28141.cpp:15:67: error: expression cannot be used as a function
             res.a[i][j]=(res.a[i][j]+1ll*a[i][k]*o.a[k][j])(%mod-1);
                                                                   ^