/in/foo.cc: In function 'int main()':
/in/foo.cc:24:23: warning: iteration 10085 invokes undefined behavior [-Waggressive-loop-optimizations]
   24 |                 if(a[i]-b[i]>maxn)
      |                    ~~~^
/in/foo.cc:22:22: note: within this loop
   22 |         for(int i=1;i<=10086;i++)
      |                     ~^~~~~~~