Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:36:12: 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:52:16: warning: variable ‘c1’ set but not used [-Wunused-but-set-variable] int n,m,x,y,c,c1,i; ^