Compilare: user.cpp: In function ‘void BellmanFord()’: user.cpp:41:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp: In function ‘int Dijkstra()’: user.cpp:71:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp:53:21: warning: unused variable ‘n1’ [-Wunused-variable] { int i,x,nod,nod2,n1,n2,cost,road,res,newc; ^ user.cpp:53:24: warning: unused variable ‘n2’ [-Wunused-variable] { int i,x,nod,nod2,n1,n2,cost,road,res,newc; ^ user.cpp:53:32: warning: unused variable ‘road’ [-Wunused-variable] { int i,x,nod,nod2,n1,n2,cost,road,res,newc; ^