/in/foo.cc: In function 'int main()':
/in/foo.cc:13:23: warning: iteration 1005 invokes undefined behavior [-Waggressive-loop-optimizations]
   13 |                 if(a[i]!=0) {
      |                    ~~~^
/in/foo.cc:12:23: note: within this loop
   12 |         for(int i=0; i<=1005; i++) {
      |                      ~^~~~~~