0	1 0 0		input r1
3	2 0 0		input r2
6	3 0 0		input r3
9	4 0 0		input r4
12	33 0 0		neg r1
15	97 0 200 	skip r1,200
18	112 0 0		return

200	17 0 0		claer r1
203	112 0 0		return