/in/foo.cc: In function 'int main()':
/in/foo.cc:6:19: warning: overflow in implicit constant conversion [-Woverflow]
  int a[5]={},minn=1e18,maxn=0;
                   ^~~~
/in/foo.cc:13:9: warning: iteration 4 invokes undefined behavior [-Waggressive-loop-optimizations]
   if(a[i]>maxn)
      ~~~^
/in/foo.cc:11:15: note: within this loop
  for(int i=1;i<=5;i++) 
              ~^~~