Problems Description
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:0cm;"> 某班级的一次Exam由两次测试组成，<span>X</span>、<span>Y</span>points别表示一名学生Page 一次、Page 二次测试的成绩，已知<span>X</span>、<span>Y</span>的联合points布律如下表<span></span> </p> <p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:0cm;"> <span> </span> </p> <table class="MsoTableGrid" border="1" cellspacing="0" cellpadding="0" style="border:none;"> <tbody> <tr> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>Y X</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>5</span> </p> </td> <td width="92" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>10</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>15</span> </p> </td> </tr> <tr> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.02</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.06</span> </p> </td> <td width="92" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span> 0.02</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.10</span> </p> </td> </tr> <tr> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>5</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.04</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.15</span> </p> </td> <td width="92" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.20</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.10</span> </p> </td> </tr> <tr> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>10</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.01</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.15</span> </p> </td> <td width="92" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.14</span> </p> </td> <td width="106" valign="top" style="border:solid windowtext 1.0pt;"> <p class="MsoListParagraph" style="text-indent:0cm;"> <span>0.01</span> </p> </td> </tr> </tbody> </table> <p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:0cm;"> <span> <p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:-36.0pt;"> <span>（1） </span>若规定这次Exam的成绩为两次测试的最大值，即<span>Z1=max{X,Y}</span>，求<span>E[max{X,Y}]</span> </p> <p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:-36.0pt;"> <span>（2） </span>若规定这次Exam的成绩为两次测试之和，即<span>Z2=X+Y</span>，求<span>E(X+Y)</span>。<span></span> </p> </span> </p>
Input格式
<p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:0cm;"> 每小题输入题号，<span>1</span>或者<span>2 </span>，请输出对应结果，保留一位小数。<span></span> </p> <p class="MsoListParagraph" style="margin-left:54.0pt;text-indent:0cm;"> <span> 0</span> </p>
Output格式
0.1
Sample
Sample Input 1
0
Sample Output 1
0.1
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