foo.cc: In function 'int main()':
foo.cc:21:14: warning: iteration 100005 invokes undefined behavior [-Waggressive-loop-optimizations]
   21 |        a[i].z=0;
      |        ~~~~~~^~
foo.cc:20:19: note: within this loop
   20 |      for(int i=0;i<=100005;i++)
      |                  ~^~~~~~~~

Found 10 testcases.
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