class Ideone
{
	public static void main (String[] args)
	{
		int n = 5, m = 3;
		for (int i = 0; i < 2*(m+n); i++)
		{
		   int x1 = i/(m+2*n),
		       x2 = (i%(m+n))%n,
		       x3 = (int)Math.ceil(((m+i)%(m+n)) / m / (1.0*n));
 
		   System.out.print(x1*(n-1) + x2 * x3 + " ");
 
		   int y1 = i/(m+n) - i/(m+2*n),
		       y2 = x2,
		       y3 = (int)Math.ceil((i%(m+n)) / n / (1.0*m));
 
		   System.out.println(y1*(m-1) + y2 * y3);
		}
	}
}

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