Compilare: main.cpp: In function 'void euler(int)': main.cpp:40:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for (int i = poz_ini_lst[x]; i < a[x].size(); i++) { | ~~^~~~~~~~~~~~~ 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) { | ~~~~~~~~~~~~~~~^~~~~~~~