Compilare: main.cpp: In function 'int bf2()': main.cpp:32:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<L[nod].size(); i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'bool bf()': main.cpp:63:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<L[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp:51:9: warning: unused variable 'i' [-Wunused-variable] int i,nod,vecin; ^