View Compilation Error

0_0_36292580_20626.cpp: In function 'void qr(T&)':
0_0_36292580_20626.cpp:10:5: error: 'LL' was not declared in this scope
     LL sgn = 1;
     ^
0_0_36292580_20626.cpp:15:13: error: 'sgn' was not declared in this scope
             sgn = -1;
             ^
0_0_36292580_20626.cpp:25:10: error: 'sgn' was not declared in this scope
     n *= sgn;
          ^