#include <iostream>

using namespace std;

int main()

{

	{

		int x=1;

		cout << x << endl;

		{

			cout << x << endl;

			int x=2;

			cout << x <<endl;

			{

				cout << x <<endl;

				int x=3;

				cout << x <<endl;

			}

			cout << x <<endl;

		}

		cout << x << endl;

	}

	return 0;

}

#include <iostream>

using namespace std;

int main()

{

	{

		int x1=1;

		cout << x1 << endl;

		{

			cout << x1 << endl;

			int x2=2;

			cout << x2 <<endl;

			{

				cout << x2 <<endl;

				int x3=3;

				cout << x3 <<endl;

			}

			cout << x2 <<endl;

		}

		cout << x1 << endl;

	}

	return 0;

}