Compilare: main.cpp: In function 'void euler(int)': main.cpp:41:23: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | while (poz_lst[x] < a[x].size()) { main.cpp: In function 'int main()': main.cpp:72:32: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 72 | if (ciclu_e.size() == m + 1) { | ~~~~~~~~~~~~~~~^~~~~~~~