foo.cc: In function 'bool f(int)':
foo.cc:14:1: warning: control reaches end of non-void function [-Wreturn-type]
   14 | }
      | ^
foo.cc: In function 'int main()':
foo.cc:26:21: warning: iteration 10004 invokes undefined behavior [-Waggressive-loop-optimizations]
   26 |                 if(f(a[i])==false)
      |                    ~^~~~~~
foo.cc:24:22: note: within this loop
   24 |         for(int i=1;i<=10005;i++)
      |                     ~^~~~~~~
foo.cc:33:23: warning: iteration 10004 invokes undefined behavior [-Waggressive-loop-optimizations]
   33 |                 if(a[i]>=m)
      |                    ~~~^
foo.cc:31:22: note: within this loop
   31 |         for(int i=1;i<=10005;i++)
      |                     ~^~~~~~~

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