Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 17 | for(int i=0;i<l[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:20: warning: unused variable 'crt' [-Wunused-variable] 95 | int maxx=-111, crt, xmax, ymax; | ^~~ main.cpp:122:33: warning: 'ymax' may be used uninitialized in this function [-Wmaybe-uninitialized] 122 | fout<<maxx<<" "<<xmax<<" "<<ymax; | ^~~~ main.cpp:122:28: warning: 'xmax' may be used uninitialized in this function [-Wmaybe-uninitialized] 122 | fout<<maxx<<" "<<xmax<<" "<<ymax; | ^~~ main.cpp:93:8: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized] 93 | dfs(root); | ~~~^~~~~~