Compilare: main.cpp: In function 'bool bfs(int)': main.cpp:20:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<L[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int flux(int)': main.cpp:42:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<L[dest].size(); i++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:90:9: warning: unused variable 'val' [-Wunused-variable] int val = flux(ind); int k = 0; ^~~