processors =2

model=crcw

def sum[3]
sum[pid]=pid

span=1

while (span<=pid)
{
	minus%=pid-span
	valone%=sum[minus%]
	valtwo%=sum[pid]
	resultofval%=valone%+valtwo%
	if (minus% <1)
	{
		sum[pid]=sum[pid]
	} else {
		sum[pid]=resultofval%
	}
	sync
	span=span*2
}

