forked from Open-CT/openct-tasks
165 lines
7.5 KiB
HTML
165 lines
7.5 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>2017-AR-10</title>
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<script>
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window.stringsLanguage = 'ar';
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</script>
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<script class="remove" type="text/javascript" src="../../../_common/modules/pemFioi/importModules-1.1.js" id="import-modules"></script>
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<script class="remove" type="text/javascript">
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var modulesPath = '../../../_common/modules';
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importModules([
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'jquery-1.7.1', 'jquery-ui.touch-punch', 'raphael-2.2.1', 'JSON-js',
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'beav-1.0', 'beaver-task-2.0', 'simulation-2.0', 'raphaelFactory-1.0',
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'delayFactory-1.0', 'simulationFactory-1.0', 'drag_lib-2.0',
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'platform-pr', 'buttonsAndMessages', 'installationAPI.01', 'miniPlatform',
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'taskStyles-0.1']);
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</script>
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<script class="remove" type="text/javascript">
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var json = {
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"id": "http://castor-informatique.fr/tasks/2017/2017-FR-10-building-lights/",
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"language": "ar",
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"version": "ar.01",
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"authors": "Arthur Charguéraud, Mathias Hiron, Nir Lavee, France-ioi",
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"translators": "Mohamed El-Sherif",
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"license": "CC BY-SA 3.0",
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"taskPathPrefix": "",
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"modulesPathPrefix": "",
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"browserSupport": [],
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"fullFeedback": true,
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"acceptedAnswers": [],
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"usesRandomSeed": false
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};
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</script>
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<script type="text/javascript">
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var taskStrings = {
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success: "أحسنت. إجابة صحيحة.",
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emptyError: "اسحب كارت رمادي إلى الفتحات البيضاء.",
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mismatchError: "الألوان غير متطابقة. فكر مرة أخرى.",
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fullError: "جميع الفتحات مشغولة. اسحب كارت ليمكنك وضع أخر."
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};
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</script>
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<script type="text/javascript" src="task.js"></script>
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<style>
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#anim_container {
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text-align: center;
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padding-top: 15px;
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}
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.wrapper {
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display: inline-block;
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margin-left: 5px;
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margin-right: 5px;
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*zoom: 1; /*IE6/7*/
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*display: inline; /*IE6/7*/
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}
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.anim {
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}
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.animTitle {
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font-weight: bold;
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padding: 10px;
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}
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.animBuilding {
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border: 1px solid black;
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}
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#animDrag {
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margin-top: 20px;
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}
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#control {
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margin-top: 1em;
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margin-bottom: 1em;
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}
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#control input {
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margin-left: 1em;
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margin-right: 1em;
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width: 8em;
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}
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#feedback {
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height: 1em;
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margin-top: 0.5em;
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margin-bottom: 0.1em;
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text-align: center;
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font-weight: bold;
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color: red;
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}
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</style>
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</head>
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<body>
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<div id="task">
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<div style="direction: rtl">
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<h1>إنارة المبنى</h1>
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<div id="tabsContainer"></div>
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<div id="taskContent">
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<p>قم بإنارة المبنى كما هو موضح بالشكل المطلوب. لإنارة صف أو عمود, قم بوضع الكارت الخاص به داخل الفتحات البيضاء بالأسفل. ثم قم بالتشغيل.</p>
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<p>كل كارت <span class="medium hard">عدا الأخير</span> سوف يضيئ الصف أو العمود المكتوب عليه.</p>
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<p class="medium hard"><b>الكارت الأخير سوف يقوم بعكس التيار الكهربي ليطفئ اللمبات المضيئة والعكس.</b></p>
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<div id="anim_container">
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<div class="wrapper">
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<div class="animTitle">المبنى</div>
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<div class="anim animBuilding" id="animUser"></div>
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</div>
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<div class="wrapper">
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<div class="animTitle">الشكل المطلوب</div>
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<div class="anim animBuilding" id="animTarget"></div>
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</div>
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<br>
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<div id="animDrag"></div>
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<div id="feedback"></div>
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<div id="control">
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<input type="button" id="execute" value="ابدأ الإنارة"/>
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<input type="button" id="stop" value="توقف"/>
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</div>
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</div>
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<img src="icon.png" style="display:none">
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</div>
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<br>
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<center><span id="error"></span></center>
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</div>
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</div><!-- task -->
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<div id="solution">
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<h2>Solution</h2>
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<div class="easy">
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<p>To reproduce the pattern, it was necessary to turn on the columns B and C, as well as the lines 3 and 4. The order did not matter. So we could write the following program :
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<p>
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<img src="Sol_easy_1.png">
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</div>
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<div class="medium">
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<p> Initially, all the lights are already on. The only card that can have an effect is the last one. So we start with it to extinguish everything.
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<p>Then there are two possible strategies.</p>
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<p>(1) We turn on all the boxes that are lighted in the objective figure, then turn off the ones we lighted too.</p>
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<p>We start by turning on the columns A and D. We must then turn off the lines 5 and 2. For this, we reverse everything, we turn on the lines 5 and 2, then we reverse everything again.
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<p>
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<img src="Sol_medium_1.png">
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<p>(2) We turn on all the boxes that are off in the objective figure, then we turn all the lights.</p>
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<img src="Sol_medium_2.png">
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</div>
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<div class="hard">
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<p>There are many possible solutions.</p>
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<p>A first solution consists of the following steps:
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<ul>
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<li>Turn off the only lighted box that is not lighted in the objective figure, on line 2: <br/> reverse everything, turn on line 2, reverse everything.
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<li>Turn on all the boxes that are in the objective: <br/> turn on columns A and D, lines 5.
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<li>Turn off all the boxes that have been turned on too :<br/>reverse all, turn on the lines 0, 1 and 6, reverse all.
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</ul>
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</p>
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<p>
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<img src="Sol_hard_1.png">
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<p>Below is the shortest solution. </p>
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<img src="Sol_hard_2.png">
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</div>
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<h2>It's computer science !</h2>
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<p> In this topic, each box of the building is on or off. Similarly, a computer's memory consists of <b> bits </b> whose value is either <b> 0 </b> or <b> 1 </b>. All numbers, all images, all texts, and all programs are described only with bits, that is, with long sequences of <b> 0 </b> and <b> 1 </b>. </p>
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<p> At the heart of the computer is a <b> processor </b> that is able to handle bit packets, typically <b> 64 </b> bits, very efficiently. For example, the processor has a "reverse all bits" operation, which takes a 64-bit packet, and a fraction of a second, replaces all <b> 0 </b> with <b> 1 </b> and all <b> 1 </b> with <b> 0 </b>. A computer can perform more than two billion such operations on 64-bit packets in one second, manipulating over 100 billion bits in a single second !</p>
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</div> <!-- task-solution -->
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</body>
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</html>
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