成绩统计

<p class="MsoNormal" align="left"> 某班Total有若干名学生（不大于<span>40</span>），已知他们Exam的数学成绩，现需要统计<span>100</span>points、<span>90</span>～<span>99</span>points、<span>80</span>～<span>89</span>points、<span>70</span>～<span>79</span>points、<span>60</span>～<span>69</span>points与不及格各成绩档各有多少人。<span></span> </p>

<p class="MsoNormal" align="left"> Page 一行 一items整数<span>n</span>，班级人数<span></span> </p> <p class="MsoNormal" align="left"> 以下<span> n</span>行，每行一items整数，代表数学成绩<span></span> </p>

<p class="MsoNormal" align="left"> Total<span>6</span>行，从Page 一行依次为<span>100</span>points、<span>90</span>～<span>99</span>points、<span>80</span>～<span>89</span>points、<span>70</span>～<span>79</span>points、<span>60</span>～<span>69</span>points与不及格的人数<span></span> </p> <p class="MsoNormal" align="left"> &nbsp;若没有此points数段人数输出<span>0&nbsp;</span> </p>