Compilare: user.cpp: In function ‘long long unsigned int calculez()’: user.cpp:72:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = KMAX; i <= k; i++) ^ user.cpp:74:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:81:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= t; i++) ^