Compilare: main.cpp: In function 'int dfs(int)': main.cpp:42:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (x != ales[nod] && dad[x].size() < mij-1){ ~~~~~~~~~~~~~~^~~~~~~ main.cpp: In function 'int main()': main.cpp:142:25: warning: unused variable 'now' [-Wunused-variable] int now = dfs(i); ^~~