PAT/source/html/a1141.html

PAT Ranking of Institutions
<div class="ques-view"><p>After each PAT, the PAT Center will announce the ranking of institutions based on their students' performances. Now you are asked to generate the ranklist.</p>
<h3 id="input-specification-">Input Specification:</h3>
<p>Each input file contains one test case. For each case, the first line gives a positive integer N (<span class="katex"><span class="katex-mathml"><math><mrow><mo>≤</mo><mn>1</mn><msup><mn>0</mn><mn>5</mn></msup></mrow>\le 10^5</math></span><span aria-hidden="true" class="katex-html"><span class="strut" style="height:0.8141079999999999em;"></span><span class="strut bottom" style="height:0.950078em;vertical-align:-0.13597em;"></span><span class="base textstyle uncramped"><span class="mrel">≤</span><span class="mord mathrm">1</span><span class="mord"><span class="mord mathrm">0</span><span class="msupsub"><span class="vlist"><span style="top:-0.363em;margin-right:0.05em;"><span class="fontsize-ensurer reset-size5 size5"><span style="font-size:0em;">​</span></span><span class="reset-textstyle scriptstyle uncramped mtight"><span class="mord mathrm mtight">5</span></span></span><span class="baseline-fix"><span class="fontsize-ensurer reset-size5 size5"><span style="font-size:0em;">​</span></span>​</span></span></span></span></span></span></span>), which is the number of testees. Then N lines follow, each gives the information of a testee in the following format:</p>
<pre><code>ID Score School
</code></pre><p>where <code>ID</code> is a string of 6 characters with the first one representing the test level: <code>B</code> stands for the basic level, <code>A</code> the advanced level and <code>T</code> the top level; <code>Score</code> is an integer in [0, 100]; and <code>School</code> is the institution code which is a string of no more than 6 English letters (case insensitive). Note: it is guaranteed that <code>ID</code> is unique for each testee.</p>
<h3 id="output-specification-">Output Specification:</h3>
<p>For each case, first print in a line the total number of institutions. Then output the ranklist of institutions in nondecreasing order of their ranks in the following format:</p>
<pre><code>Rank School TWS Ns
</code></pre><p>where <code>Rank</code> is the rank (start from 1) of the institution; <code>School</code> is the institution code (all in lower case); ; <code>TWS</code> is the <strong>total weighted score</strong> which is defined to be the integer part of <code>ScoreB/1.5 + ScoreA + ScoreT*1.5</code>, where <code>ScoreX</code> is the total score of the testees belong to this institution on level <code>X</code>; and <code>Ns</code> is the total number of testees who belong to this institution.</p>
<p>The institutions are ranked according to their <code>TWS</code>. If there is a tie, the institutions are supposed to have the same rank, and they shall be printed in ascending order of <code>Ns</code>. If there is still a tie, they shall be printed in alphabetical order of their codes.</p>
<h3 id="sample-input-">Sample Input:</h3>
<pre><code class="lang-in">10
A57908 85 Au
B57908 54 LanX
A37487 60 au
T28374 67 CMU
T32486 24 hypu
A66734 92 cmu
B76378 71 AU
A47780 45 lanx
A72809 100 pku
A03274 45 hypu
</code></pre>
<h3 id="sample-output-">Sample Output:</h3>
<pre><code class="lang-out">5
1 cmu 192 2
1 au 192 3
3 pku 100 1
4 hypu 81 2
4 lanx 81 2
</code></pre>
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