Compilare: main.cpp: In function 'void daicstra()': main.cpp:65:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<A[im].size(); ++i) ~^~~~~~~~~~~~~ main.cpp:52:9: warning: variable 'nr' set but not used [-Wunused-but-set-variable] int nr=0,im=0,lg=0; ^~