<image> Given the flowchart of an algorithm as shown in the figure, let the output $$(x,y)$$ values be denoted as $$(x_{1},y_{1})$$, $$(x_{2},y_{2})$$, $$…(x_{n},y_{n})$$, $$…$$ 
$$(1)$$ If an output during the program execution is $$(9,t)$$, find the value of $$t$$; 
$$(2)$$ How many pairs $$(x,y)$$ are output when the program ends?