public static Tuple<Double, Double> maxLeft(Tuple<Double, Double> alpha,Tuple<Double, Double> alphabeta) {
		if(alpha.val1>alphabeta.val1)
			return alpha;
		if(alpha.val1<alphabeta.val1)
			return alphabeta;
		if(alpha.val2>alphabeta.val2)
			return alpha;
		if(alpha.val2<alphabeta.val2)
			return alphabeta;
		return alpha;
	}