/in/foo.cc: In function 'int main()':
/in/foo.cc:6:95: error: expected ';' before string constant
    cout<<"123 153 183 213 243"<<endl<<"273 303 333 363 393"<<endl<<"423 453 483 513 543"<<endl"573 603 633 663 693"<<endl<<"723 753 783 813 843"<<endl<<"873 903 933 963 993" 
                                                                                               ^~~~~~~~~~~~~~~~~~~~~