/in/foo.cc: In function 'int main()':
/in/foo.cc:6:9: warning: 'x' is used uninitialized in this function [-Wuninitialized]
  while(x!=(-1))
        ~^~~~~~
/in/foo.cc:19:40: warning: 'main2' is used uninitialized in this function [-Wuninitialized]
  cout<<fixed<<setprecision(2)<<(sum-max-main2)/(cnt-1);
                                ~~~~~~~~^~~~~~~