Compilare: main.cpp: In function 'void desc(long long unsigned int)': main.cpp:32:52: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'long long unsigned int' [-Wsign-compare] 32 | while (i < prime.size() && prime[i] * prime[i] <= n) main.cpp: In function 'long long unsigned int pinex(long long unsigned int)': main.cpp:54:38: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 54 | for (unsigned long long i = 0; i < (1 << n); i++) | ~~^~~~~~~~~~