View Compilation Error

0_0_36573165_16081.cpp: In function 'void qr(T&)':
0_0_36573165_16081.cpp:11:5: error: 'LL' was not declared in this scope
     LL sgn = 1;
     ^
0_0_36573165_16081.cpp:16:13: error: 'sgn' was not declared in this scope
             sgn = -1;
             ^
0_0_36573165_16081.cpp:26:10: error: 'sgn' was not declared in this scope
     n *= sgn;
          ^