:1:1: error: 'include' does not name a type
    1 | include<iostream>
      | ^~~~~~~
: In function 'int main()':
:7:15: error: 'cin' was not declared in this scope
    7 |         while(cin>>n>>m>>k){
      |               ^~~
:19:39: error: 'cout' was not declared in this scope
   19 |         for(int i=0;i<n;i++) if(a[i]) cout<<i+1<<' ';
      |                                       ^~~~
:20:9: error: 'cout' was not declared in this scope
   20 |         cout<<endl;
      |         ^~~~
:20:15: error: 'endl' was not declared in this scope
   20 |         cout<<endl;
      |               ^~~~