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Actually it says, "All integers will be less than 10,000 and greater than 0.", so it should accept input up to 9999 right?

you are right.

Not sure what you are referring to. Do you mean that this input is possible:

10 1

and if this is right then the output would according to the output ...

fast, but
why restrict only until 1000, the problem input is for 10000,
and please pay attention this problem can be accept not ordered input.

regards,

ali