/***********************************************************************\
*                              triangles1.d                             *
*                                                                       *
*                           Triangle Challenge                          *
*                                                                       *
*                          First console version                        *
*                          Calculates the number                        *
*                                                                       *
*                            by Stewart Gordon                          *
*                              October 2004                             *
\***********************************************************************/
import std.stdio;
import std.c.stdio;

void main() {
	int n1, n2;
	char response = 'y';

	while (response == 'y' || response == 'Y') {
		writef("Number of divisions along each edge: ");
		fflush(stdin);
		scanf("%d%d", &n1, &n2);

		writefln("Number of triangles: %d", n1 * n2 * (n1 + n2) / 2);

		writef("Again? ");
		fflush(stdin);
		response = getchar();
	}
}