foo.cc: In function 'int main()':
foo.cc:14:10: warning: iteration 998 invokes undefined behavior [-Waggressive-loop-optimizations]
   14 |   if(di[i]>max)
      |      ~~~~^
foo.cc:13:15: note: within this loop
   13 |  for(int i=2;i<=1000;i++)
      |              ~^~~~~~

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