Consider the following code:
Input[1]: rules = {a -> b, b -> c, c -> x, b -> d, d -> y};a//.rules;
output[2]:x
In the above program, "b" respectively implies two variables "c" and "d", and the two branches respectively go to the two terminal results "x" and "y". But the program runs only one branch a->b->c->x,losing a->b->d->y. Is there any approach to run all elements of the set of rules, so that the output would be "x" and "y"?
