Compilare: main.cpp: In function 'void BFS()': main.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<graph[index].size();++i) ~^~~~~~~~~~~~~~~~~~~~ main.cpp:12:15: warning: unused variable 'vecin' [-Wunused-variable] int index,vecin; ^~~~~ main.cpp: In function 'int main()': main.cpp:42:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;++i) ^~~ main.cpp:45:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return 0; ^~~~~~