Summation from a to b The program has an input of a and b, and outputs the sum of numbers from a to b, inclusive. Score is in bytes. As always, standard loopholes are disallowed.

If your input is in the format [a,b], +3 bytes
Stuck, 4 Bytes

I'm amazed Stuck finally is winning something! The inclusive range function checks to see if the top of the stack is a list of length 2, and uses it for the parameters of the range function if so.

t]R+


Input is | separated, as t takes a bunch of inputs separated by |s and places them on the stack. ] just wraps the elements in a list, and lets the range function do it's job.

If that still falls in the penalty, then this works (5 Bytes): ii]R+