Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:33:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (int i=0; i<l[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp:50:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int i=0; i<l[nod].size (); i++) | ~^~~~~~~~~~~~~~~ main.cpp:56:32: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int j=0; j<b[p[vecin]].size (); j++) | ~^~~~~~~~~~~~~~~~~~~~ main.cpp:64:16: warning: 'poz' may be used uninitialized [-Wmaybe-uninitialized] 64 | b[p[poz]].push_back (nod); | ~~~~~^ main.cpp:32:9: note: 'poz' was declared here 32 | int poz; | ^~~