Compilare: main.cpp: In function 'void dfs_aflare_arbore_final(int, int)': main.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[x].size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'void dfs_arbore_final(int, int)': main.cpp:51:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[x].size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v[nod].size(); j++) ~~^~~~~~~~~~~~~~~