Compilare: main.cpp: In function 'int main()': main.cpp:21:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<V.size(); i++) ~^~~~~~~~~ main.cpp:29:39: warning: 'dr' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<smn<<' '<<st+1<<' '<<dr+1<<'\n'; ^~~~ main.cpp:29:28: warning: 'st' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<smn<<' '<<st+1<<' '<<dr+1<<'\n'; ^~~