a := 0
{
	a := 1
	b := a
}

//a := 1
//b := 1 - 2 * 2 + 5
//c := a + b * 2 * b
//d := a + 4 * b * a

/*x := 1
y := 1

i := 60
while i {
	z := x + y
	y = x
	x = z
	print(z)
	i = i - 1
}*/