foo.cc: In function 'int main()':
foo.cc:6:4: error: 'cin' was not declared in this scope
    cin>>N;
    ^~~
foo.cc:6:4: note: suggested alternative: 'main'
    cin>>N;
    ^~~
    main
foo.cc:22:4: error: 'cout' was not declared in this scope
    cout<<count;
    ^~~~
foo.cc:22:4: note: suggested alternative: 'count'
    cout<<count;
    ^~~~
    count

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