求nitems同学的总points和平均points

&nbsp; <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">输入</span><span style="font-size:12pt;">n</span><span style="font-family:宋体;font-size:12pt;">items同学的成绩，求他们的总成绩和平均成绩！</span><span style="font-size:12pt;"></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">输入格式：</span><span style="font-size:12pt;"></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">Page 一行，输入一items整数</span><span style="font-size:12pt;">n<span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>(2&lt;n&lt;100)</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">Page 二行，Total</span><span style="font-size:12pt;">n</span><span style="font-family:宋体;font-size:12pt;">items整数</span><span style="font-size:12pt;">a</span><span style="font-family:宋体;font-size:12pt;">。</span><span style="font-size:12pt;"><span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>(0&lt;=a&lt;=100)</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">输出格式：</span><span style="font-size:12pt;"></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">输出有</span><span style="font-size:12pt;">2</span><span style="font-family:宋体;font-size:12pt;">行，</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">Page 一是总points，</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">Page 二行是平均points。（保留</span><span style="font-size:12pt;">1</span><span style="font-family:宋体;font-size:12pt;">位小数）</span><span style="font-size:12pt;"></span> </p> <p class="MsoNormal"> <span style="font-size:12pt;"></span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">输入</span><span style="font-family:宋体;font-size:12pt;">样例：<span></span></span> </p> <p class="MsoNormal"> <span style="font-size:12pt;">5</span> </p> <p class="MsoNormal"> <span style="font-size:12pt;">100 90 84 100 100</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;font-size:12pt;">输出</span><span style="font-family:宋体;font-size:12pt;">样例：</span><span style="font-size:12pt;"></span> </p> <p class="MsoNormal"> <span style="font-size:12pt;">474</span> </p> <p class="MsoNormal"> <span style="font-size:12pt;">94.8</span> </p>