include iostream using namespace std class private int 100 int public

#include <iostream>

using namespace std;

class Q{
private:
	int a[100];
	int n;
public:
	void Enter(){
		cout << "Vvedite dlinu massiva" << endl;
		cin >> n;
		cout << "Vvedite elementi massiva" << endl;
		for (int q=0; q<n; q++)
			cin >> a[q];
	}
	void Output(){
		cout << endl;
		for (int q=0; q<n; q++)
			cout << a[q] << " ";
		cout << endl;
	}
	void TaskOutPut(){
		for (int q=0; q<n; q = q + 2)
			cout << a[q] << " ";
		for (int q=1; q<n; q = q + 2)
			cout << a[q] << " ";
	}

};

int main(){
	Q obj;
	obj.Enter();
	obj.TaskOutPut();
}