import java.util.Scanner;

class Feb10 {
	public static void main(String[] args) {

		Scanner kb = new Scanner(System.in);

		//System.out.println("Enter an integer");

		//int x = kb.nextInt();


		int a = 0;
		int b = 10;

		while(a < b) {
			System.out.println(a);
			a = a + 1;
		}

		// print values between 10 and 20 (inclusively)
		// print on a single line
		a = 10;
		b = 21;

		while(a < b) {
			System.out.print(a + " ");
			a = a + 1;
		}
		System.out.println();
		
		
		a = 10;
		b = 20;

		while(a <= b) {
			System.out.print(a + " ");
			a = a + 1;
		}
		System.out.println();

		// compute the sum of integers between 1 and 5

		a = 1;
		b = 5;
		int sum = 0;
		while(a <= b) {
			sum = sum + a;
			a = a + 1;
		}
		System.out.println("Sum: " + sum);

	}
}