Compilare: main.cpp: In function 'int main()': main.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i=0;i<euler.size()-1;i++){ | ~^~~~~~~~~~~~~~~ main.cpp:46:8: warning: 'start' may be used uninitialized [-Wmaybe-uninitialized] 46 | dfs(start); | ~~~^~~~~~~ main.cpp:36:9: note: 'start' was declared here 36 | int start; | ^~~~~