Compilare: user.cpp: In function ‘void Combine(int, int)’: user.cpp:26:15: warning: unused variable ‘rez’ [-Wunused-variable] long long rez = 0; ^ user.cpp: In function ‘int main()’: user.cpp:52:9: warning: variable ‘N’ set but not used [-Wunused-but-set-variable] int N, M, x, y; ^ user.cpp:65:17: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[x][(y / 64)] |= ( 1LL << (y % 64) ); ^ user.cpp:66:17: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[y][(x / 64)] |= ( 1LL << (x % 64) ); ^