Compilare: main.cpp: In function 'void DFS(int, int, int)': main.cpp:56:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(i = 0; i < arb[nod].size(); i++){ | ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int readInt()': main.cpp:26:3: warning: 'tch' may be used uninitialized in this function [-Wmaybe-uninitialized] 26 | if(tch == '-'){ | ^~