import java.lang.*;
import java.io.*;
public class p21
{
	public static void main(String args[])
	{
		int i,j; 	i=20;
		while (i<100)
			{
				j=i/20;
				System.out.println(" j:"+j+"   i:"+i);
				i=i+15;
			}
		System.out.println("_________________________");
		int a,b; a=20;
		b=a/20;
		do
		{
			a=a+15;

			System.out.println(" j:"+b+"   i:"+a);
		}
		while (a<=100);
		System.out.println("_________________________");

		int y;
		for (int x=20;x<100;x++)
		{
			x=x+15;
			y=x/20;
			System.out.println(" j:"+y+"   i:"+x);

		}
	}
}