Compilare: main.cpp: In function 'void arbore(int, int)': main.cpp:30:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void prec(int, int)': main.cpp:72:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vecini[nod].size();i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:148:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=0;z<ordine_nou[j].size();z++){ ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:155:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=0;z<ordine[j+1].size();z++){ ~^~~~~~~~~~~~~~~~~~~ main.cpp:159:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=0;z<ordine_nou[j].size();z++){ ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:164:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z=0;z<ordine[j+1].size();z++){ ~^~~~~~~~~~~~~~~~~~~