foo.cc: In function 'int main()':
foo.cc:5:2: error: 'cin' was not declared in this scope
  cin>>a>>b>>c>>d>>e>>f>>g>>h>>i>>j>>k>>l>>m;
  ^~~
foo.cc:5:2: note: suggested alternative: 'main'
  cin>>a>>b>>c>>d>>e>>f>>g>>h>>i>>j>>k>>l>>m;
  ^~~
  main
foo.cc:8:2: error: 'cout' was not declared in this scope
  cout<<"Yes";
  ^~~~
foo.cc:10:2: error: 'cout' was not declared in this scope
  cout<<"NO";
  ^~~~
foo.cc:13:2: error: 'cout' was not declared in this scope
  cout<<"No";
  ^~~~

[Hydro](https://hydro.ac)提供评测服务