Compilare: user.cpp: In function ‘int BFS(int)’: user.cpp:25:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<mv[x].size();i++) ^ user.cpp: In function ‘int dijkstra()’: user.cpp:50:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<mv[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:74:10: warning: unused variable ‘j’ [-Wunused-variable] int p,i,j,m,x,y,d; ^