Compilare: user.cpp: In function ‘void kruskal()’: user.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<p.size();i++) ^ user.cpp:69:15: warning: unused variable ‘numar’ [-Wunused-variable] int i,a,b,numar=0; ^ user.cpp: In function ‘int main()’: user.cpp:86:12: warning: unused variable ‘dist1’ [-Wunused-variable] double dist1,dist2,minim; ^ user.cpp:86:18: warning: unused variable ‘dist2’ [-Wunused-variable] double dist1,dist2,minim; ^