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计算两点间的距离

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 440444    Accepted Submission(s): 146178


Problem Description
输入两点坐标(X1,Y1),(X2,Y2),计算并输出两点间的距离。
 

Input
输入数据有多组,每组占一行,由4个实数组成,分别表示x1,y1,x2,y2,数据之间用空格隔开。
 

Output
对于每组输入数据,输出一行,结果保留两位小数。
 

Sample Input
0 0 0 1 0 1 1 0
 

Sample Output
1.00 1.41
 

Author
lcy
 

Source
 

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