Compilare: main.cpp: In function 'void citire()': main.cpp:23:11: warning: unused variable 'dist' [-Wunused-variable] float dist; ^~~~ main.cpp: In function 'void afis()': main.cpp:35:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] {cout<<i<<" : "; for(j=0; j<v[i].size(); j++) ~^~~~~~~~~~~~ main.cpp: In function 'void prim()': main.cpp:56:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~