Compilare: user.cpp:15:27: warning: overflow in implicit constant conversion [-Woverflow] int t[75000],f[75000],inf=999999999999999,n; ^ user.cpp: In function ‘void dijkstra(int)’: user.cpp:26:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:40:17: warning: unused variable ‘j’ [-Wunused-variable] long long i,j,m,k,x,y,cost; ^