View Compilation Error

0_0_33220435_18846.cpp: In member function 'bool RSX::question::operator<(const RSX::question&) const':
0_0_33220435_18846.cpp:63:52: error: expected ';' before ')' token
   return bl[l] ^ bl[x.l] ? bl[l] < bl[x.l]: r < x.r);
                                                    ^
0_0_33220435_18846.cpp:63:52: error: expected primary-expression before ')' token