foo.cc: In function 'int main()':
foo.cc:11:48: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
   11 |                 cout<<(((n/500)*1000)+((n/5)*5)<<endl;
      |                        ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
foo.cc:11:54: error: expected ')' before ';' token
   11 |                 cout<<(((n/500)*1000)+((n/5)*5)<<endl;
      |                       ~                              ^
      |                                                      )
foo.cc:14:30: error: expected ';' before ')' token
   14 |                 cout<<(n/5)*5)<<endl;
      |                              ^
      |                              ;