add		$t0,$0,$0
addi		$a0,$a0,3
add		$t1,$a0,$0
loop:
		beq		$t1,$0,finish	
		add		$t0,$t0,$a0			
		subi		$t1,$t1,1
		j		loop
finish:	
		add		$t0,$t0,$a1		
		add		$v0,$t0,$0