运行 ID: 440343

Main.cc: In function ‘int main()’:
Main.cc:8:2: error: ‘cin’ was not declared in this scope
  cin>>n>>k;
  ^~~
Main.cc:8:2: note: suggested alternative: ‘main’
  cin>>n>>k;
  ^~~
  main
Main.cc:12:2: error: ‘sort’ was not declared in this scope
  sort(a,a+n,cmp);
  ^~~~
Main.cc:12:2: note: suggested alternative: ‘short’
  sort(a,a+n,cmp);
  ^~~~
  short
Main.cc:13:2: error: ‘cout’ was not declared in this scope
  cout<