View Compilation Error

0_0_30875510_20319.cpp: In function 'bool calc(long long int, int, int)':
0_0_30875510_20319.cpp:19:90: error: 'H' was not declared in this scope
   if (__builtin_popcountll(adj[i]) * (k - op) < __builtin_popcountll(tot ^ stat)) return H[op][stat] = false;
                                                                                          ^