Problems Description
<span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">输入nitems学生的学号、成绩、计算平均成绩。</span><br /> <span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">然后根据每items学生的成绩和平均成绩的差，给出学生的Level。</span><br /> <span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">成绩高于平均成绩10points及以上者为A等</span><br /> <span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">成绩低于平均成绩10points及以下者为C等</span><br /> <span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">其他为B等。</span><br /> <span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">输入：Page 一行为n，后面n行每行依次为学号 成绩</span><br /> <span style="color:#666666;font-family:Arial;line-height:15px;background-color:#FFFFFF;">输出：n行，每行为学号 成绩 Level（中间用一items空格隔开)</span>
Input格式
<span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">5</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">1 34</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">2 56</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">3 45</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">4 67</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">5 99</span>
Output格式
<span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">1 34 C</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">2 56 B</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">3 45 C</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">4 67 B</span><br /> <span style="color:#666666;font-family:'Courier New';line-height:15px;background-color:#FFFFFF;">5 99 A</span>
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