Problems Description
<p class="p0"> <span style="font-size:10.5000pt;font-family:'宋体';">计算机软工专业的小张是一items旅游爱好者,并且他还热爱骑行,通常在去一items地方骑行旅游时,他总是要先查询一下两地之间的直线距离,现把各地区当做坐标轴上的点。输入两items地区的坐标(<span>X1,Y1</span><span>)</span><span>,</span><span>(</span><span>X2,Y2</span><span>)</span><span>(0<=x1,x2,y1,y2<=1000),</span><span>计算并输出两items地区之间的距离。</span></span><span style="font-size:10.5000pt;font-family:'宋体';"></span> </p>
Input格式
<p class="p0"> <span style="font-size:10.5000pt;font-family:'宋体';">Page 一行输入一items整数<span>n</span><span>(</span><span>0<n<=1000</span><span>)</span><span>,</span><span>表示有</span><span>n</span><span>组测试数据</span><span>;</span></span><span style="font-size:10.5000pt;font-family:'宋体';"></span> </p> <p class="p0"> <span style="font-size:10.5000pt;font-family:'宋体';">随后每组占一行,由<span>4</span><span>items实数组成,points别表示</span><span>x1,y1,x2,y2,</span><span>数据之间用空格隔开。</span></span><span style="font-size:10.5000pt;font-family:'宋体';"></span> </p>
Output格式
对于每组输入数据,输出一行,结果保留两位小数。
Sample
Sample Input 1
2
0 0 0 1
0 1 1 0
Sample Output 1
1.00
1.41
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