Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:22:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(int i=0;i<l[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:137:33: warning: 'ymax' may be used uninitialized in this function [-Wmaybe-uninitialized] 137 | fout<<maxx<<" "<<xmax<<" "<<ymax; | ^~~~ main.cpp:137:28: warning: 'xmax' may be used uninitialized in this function [-Wmaybe-uninitialized] 137 | fout<<maxx<<" "<<xmax<<" "<<ymax; | ^~~ main.cpp:111:8: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] 111 | dfs(root, 1); | ~~~^~~~~~~~~