Compilare: main.cpp: In function 'void BFS(int)': main.cpp:40:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[Nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:38:13: warning: unused variable 'c' [-Wunused-variable] int c = 0; ^ main.cpp: In function 'int main()': main.cpp:75:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < drum.size(); i++) ~~^~~~~~~~~~~~~ main.cpp:62:9: warning: unused variable 'e' [-Wunused-variable] int e = 2; ^