/in/foo.cc: In function 'int main()':
/in/foo.cc:9:2: error: 'cin' was not declared in this scope
  cin>>n;
  ^~~
/in/foo.cc:21:14: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
    if(i[mip] = o)
       ~~~~~~~^~~
/in/foo.cc:30:2: error: 'cout' was not declared in this scope
  cout<<sum<<endl;
  ^~~~
/in/foo.cc:30:2: note: suggested alternative: 'rout'
  cout<<sum<<endl;
  ^~~~
  rout
/in/foo.cc:30:13: error: 'endl' was not declared in this scope
  cout<<sum<<endl;
             ^~~~
/in/foo.cc:30:13: note: suggested alternative: 'enum'
  cout<<sum<<endl;
             ^~~~
             enum