Problems Description
<span style="font-size:12.0pt;font-family:宋体;">求<span>100</span>（不包括<span>100</span>）到<span>n</span>之间的所有素数（包括<span>n</span>）正负相间的和，<span>n</span>（<span>n</span>为整型数据）通过键盘输入，如当<span>n=200</span>时<span>,101-103+107-109+</span>…<span>199.</span>要求通过<span>int<span> </span>prime(int num)</span>判断素数。</span>
Input格式
<p class="MsoNormal" style="text-align:left;" align="left"> <span style="font-size:12.0pt;line-height:150%;font-family:宋体;">输入<span>1</span>items整型数据（多组输入数据）<span></span></span> </p>
Output格式
<p class="MsoNormal" style="text-align:left;" align="left"> <span style="font-size:12.0pt;line-height:125%;font-family:宋体;">输出计算的值（多组输出数据）<span></span></span> </p>
Sample
Sample Input 1
200
300
Sample Output 1
135
187
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