/in/foo.cc: In function 'int main()':
/in/foo.cc:10:8: warning: label 'std' defined but not used [-Wunused-label]
        std:queue<int> Q;
        ^~~
/in/foo.cc:14:15: warning: iteration 1001 invokes undefined behavior [-Waggressive-loop-optimizations]
        dist[i]=-1;
        ~~~~~~~^~~
/in/foo.cc:12:18: note: within this loop
     for(int i=0;i<=1001;i++)
                 ~^~~~~~
/in/foo.cc:6:28: warning: 'j' is used uninitialized in this function [-Wuninitialized]
  int dist[1001],cur,next,s,j,a[11],t;
                            ^