Compilare: main.cpp: In function 'void dfs(int)': main.cpp:37:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 37 | for(int i = 0; i < graph[node].size(); i++) | ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:98:13: warning: 'n' may be used uninitialized in this function [-Wmaybe-uninitialized] 98 | if(euler(n) == false) | ~~~~~^~~