/in/foo.cc: In function 'int main()':
/in/foo.cc:23:10: warning: iteration 1004 invokes undefined behavior [-Waggressive-loop-optimizations]
   dist[i]=10007;
   ~~~~~~~^~~~~~
/in/foo.cc:22:15: note: within this loop
  for(int i=1;i<=1005;i++){
              ~^~~~~~