PAT/html/a1028.html

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<h1>1028. List Sorting (25)</h1>
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<p>Excel can sort records according to any column.  Now you are supposed to imitate this function.</p>
<p><b>Input</b></p>
<p>Each input file contains one test case.  For each case, the first line contains two integers N (&lt;=100000) and C, where N is the number of records and C is the column that you are supposed to sort the records with.  Then N lines follow, each contains a record of a student.  A student's record consists of his or her distinct ID (a 6-digit number), name (a string with no more than 8 characters without space), and grade (an integer between 0 and 100, inclusive).</p>
<p><b>Output</b></p>
<p>For each test case, output the sorting result in N lines.  That is, if C = 1 then the records must be sorted in increasing order according to ID's; if C = 2 then the records must be sorted in non-decreasing order according to names; and if C = 3 then the records must be sorted in non-decreasing order according to grades.  If there are several students who have the same name or grade, they must be sorted according to their ID's in increasing order.</p>
<b>Sample Input 1</b><pre>
3 1
000007 James 85
000010 Amy 90
000001 Zoe 60
</pre>
<b>Sample Output 1</b><pre>
000001 Zoe 60
000007 James 85
000010 Amy 90
</pre>
<b>Sample Input 2</b><pre>
4 2
000007 James 85
000010 Amy 90
000001 Zoe 60
000002 James 98
</pre>
<b>Sample Output 2</b><pre>
000010 Amy 90
000002 James 98
000007 James 85
000001 Zoe 60
</pre>
<b>Sample Input 3</b><pre>
4 3
000007 James 85
000010 Amy 90
000001 Zoe 60
000002 James 90
</pre>
<b>Sample Output 3</b><pre>
000001 Zoe 60
000007 James 85
000002 James 90
000010 Amy 90
</pre>
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