public class Person {
    private String name;
    private int age;
    private boolean sex；
    private Person mate;
   
    public boolean mary(Person p){
        
        if(this.isSex()==p.isSex()){
            return false;
        }
      
        if(this.isSex()){
            if(this.getAge()<22||p.getAge()<20)
                return false;
        }else{
            if(this.getAge()<20||p.getAge()<22)
                return false;
        }
      
        if(this.getMate()!=null||p.getMate()!=null){
            return false;
        }
        this.setMate(p);
        p.setMate(this);
        return true;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public boolean isSex() {
        return sex;
    }

    public void setSex(boolean sex) {
        this.sex = sex;
    }

    public Person getMate() {
        return mate;
    }

    public void setMate(Person mate) {
        this.mate = mate;
    }
}