Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:16:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int j=0;j<G[i].size();j++){ | ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:43:20: warning: 'nod' may be used uninitialized [-Wmaybe-uninitialized] 43 | dfs(nod,-1); | ~~~^~~~~~~~ main.cpp:35:21: note: 'nod' was declared here 35 | int nod,maxdist=0; | ^~~