Compilare: main.cpp: In function 'int bfs()': main.cpp:28:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:40:11: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] fin>>s+1; ~^~ main.cpp:84:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[dest].size();i++){ ~^~~~~~~~~~~~~~~