Volleyball Game: rules
A: vs B:
a:b = 20 : 20
Who wins (a or b) a
	a:b = 21 : 20
Who wins (a or b) a
	a:b = 22 : 20
Who wins (a or b) a
	a:b = 23 : 20
Who wins (a or b) b
	a:b = 23 : 21
Who wins (a or b) b
	a:b = 23 : 22
Who wins (a or b) b
	a:b = 23 : 23
Who wins (a or b) b
	a:b = 23 : 24
Who wins (a or b) a
	a:b = 24 : 24
Who wins (a or b) a
	a:b = 25 : 24
Who wins (a or b) a
	a:b = 26 : 24
A wins