add $s2, $zero, $zero	
add $s1, $zero, $zero	
lw $t0, 20($s0)		
LOOP: 
slti $s3, $s1, 50		
beq $s3, $zero, EXIT	
	add $s2, $s2, $t0		
	add $s1, $s1, 2		
	addi $s0, $s0, 4		 
	j LOOP
EXIT: