Compilare: main.cpp: In function 'std::vector<int> find_eulerian_path(std::vector<std::vector<int> >&, int)': main.cpp:29:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i = 0; i < graf[vecin].size(); i++) { | ~~^~~~~~~~~~~~~~~~~~~~