How do I start this HACK.asm code?

//complement.asm

//This asm checks whether two numbers a and b are complements;

//that is, each bit active in a is inactive b, and vice-versa.

//Other ways of saying this are:

// (a & b) = 0 and (a | b) = 0b111..., where & is bitwise AND and | is bitwise OR

// (a + b) = -1

// and any other technique you come up with is ok, as long as it functions properly.

//The two numbers are given in RAM[0] and RAM[1]

//and the result will be stored to RAM[2].

//The result should be 1 if a and b are complements,

//and 0 if they are not.

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