View Compilation Error

0_0_30874287_20880.cpp: In function 'long long int getInv(long long int, long long int)':
0_0_30874287_20880.cpp:24:48: error: 'qmod' was not declared in this scope
 LL getInv(LL a,LL mod){ return qmod(a,mod-2,mod); }
                                                ^