<snapdata remixID="14345786"><project name="U5L2-SImulation" app="Snap! 10.7.1, https://snap.berkeley.edu" version="2"><notes></notes><thumbnail>data:image/png;base64,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</thumbnail><scenes select="1"><scene name="U5L2-SImulation"><notes></notes><hidden></hidden><headers></headers><code></code><blocks><block-definition s="simulate disease, population: %&apos;population input&apos; percent infected: %&apos;percent initially infected input&apos; speed: %&apos;speed input&apos;" type="reporter" category="other"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="doDeclareVariables"><list><l>elapsed time</l><l>start time</l></list></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><custom-block s="initialize simulation %n %n %n"><block var="population input"/><block var="percent initially infected input"/><block var="speed input"/></custom-block><block s="show"></block><block s="doRepeat"><block var="population input"/><script><block s="createClone"><l>Sprite</l></block></script></block><block s="hide"></block><block s="doSetVar"><l>start time</l><block s="reportDate"><l><option>time in milliseconds</option></l></block></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doWaitUntil"><block s="reportVariadicEquals"><list><block var="number infected"/><block var="population"/></list></block></block><block s="doSetVar"><l>elapsed time</l><block s="reportQuotient"><block s="reportDifference"><block s="reportDate"><l><option>time in milliseconds</option></l></block><block var="start time"/></block><l>1000</l></block></block><block s="doBroadcast"><l>vanish</l><list></list></block><block s="doReport"><block var="elapsed time"/></block></script></block-definition><block-definition s="average time for disease spread with population size: %&apos;size&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input></inputs><script><block s="bubble"><l></l></block><block s="doReport"><block s="reportQuotient"><block s="reportCombine"><block s="reportMap"><block s="reifyReporter"><autolambda><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><block var="size"/><l>10</l><l>2</l></custom-block></autolambda><list></list></block><block s="reportNumbers"><l>1</l><l>10</l></block></block><block s="reifyReporter"><autolambda><block s="reportVariadicSum"><list><l></l><l></l></list></block></autolambda><list></list></block></block><l>10</l></block></block></script></block-definition><block-definition s="initialize clone" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doIf"><block s="reportVariadicLessThan"><list><block var="number infected"/><block s="reportVariadicProduct"><list><block var="population"/><block s="reportQuotient"><block var="percent initially infected"/><l>100</l></block></list></block></list></block><script><block s="doChangeVar"><l>number infected</l><l>1</l></block><block s="doSetVar"><l>infected?</l><block s="reportBoolean"><l><bool>true</bool></l></block></block><block s="doSwitchToCostume"><l>sick</l></block></script><list></list></block><block s="doGotoObject"><l><option>random position</option></l></block><block s="doFaceTowards"><l><option>random position</option></l></block></script></block-definition><block-definition s="touching infected person?" type="predicate" category="sensing"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doForEach"><l>neighbor</l><block s="reportGet"><l><option>neighbors</option></l></block><script><block s="doIf"><block s="reportVariadicAnd"><list><block s="reportTouchingObject"><block var="neighbor"/></block><block s="reportVariadicEquals"><list><block s="reportAttributeOf"><l><option>costume name</option></l><block var="neighbor"/></block><l>sick</l></list></block></list></block><script><block s="doReport"><block s="reportBoolean"><l><bool>true</bool></l></block></block></script><list></list></block></script><comment w="174.66666666666666" collapsed="false">Fill in the blank to check whether&#xD;this clone is touching an infected one.</comment></block><block s="doReport"><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition><block-definition s="initialize simulation %&apos;pop&apos; %&apos;inf&apos; %&apos;sp&apos;" type="command" category="variables"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%n"></input><input type="%n"></input></inputs><script><block s="doSetVar"><l>population</l><block var="pop"/><comment w="216.66666666666666" collapsed="true">Make global so &quot;when I start&quot; can use it.</comment></block><block s="doSetVar"><l>percent initially infected</l><block var="inf"/></block><block s="doSetVar"><l>speed</l><block var="sp"/></block><block s="doSetVar"><l>clones ready?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doSetVar"><l>number infected</l><l>0</l></block><block s="doSetVar"><l>infected?</l><block s="reportBoolean"><l><bool>false</bool></l></block></block><block s="doSwitchToCostume"><l>well</l></block><block s="setScale"><l>50</l></block></script></block-definition></blocks><primitives><block-definition s="wait until %&apos;condition&apos;" type="command" category="control" selector="doWaitUntil" primitive="doWaitUntil"><header></header><code></code><translations></translations><inputs><input type="%boolUE" readonly="true"></input></inputs><script><block s="doPrimitive"><l><bool>true</bool></l><l>doWaitUntil</l></block><block s="doIf"><block s="reportNot"><block s="evaluate"><block var="condition"/><list></list></block></block><script><block s="doWaitUntil"><block s="evaluate"><block var="condition"/><list></list></block></block></script><list></list></block></script></block-definition><block-definition s="if %&apos;condition&apos; %&apos;true case&apos; %&apos;else pairs&apos;" type="command" category="control" selector="doIf" primitive="doIf"><header></header><code></code><translations></translations><inputs><input type="%b" readonly="true"></input><input type="%cs" readonly="true" irreplaceable="true"></input><input type="%elseif" readonly="true" irreplaceable="true" expand="else if&#xD;"></input></inputs><script><block s="doPrimitive"><l><bool>true</bool></l><l>doIf</l></block><block s="doDeclareVariables"><list><l>self</l></list></block><block s="doSetVar"><l>self</l><block s="reportEnvironment"><l><option>script</option></l></block></block><block s="doIfElse"><block var="condition"/><script><block s="doRun"><block var="true case"/><list></list></block></script><script><block s="doIfElse"><block s="reportListIsEmpty"><block var="else pairs"/></block><script></script><script><block s="doIfElse"><block s="reportListItem"><l>1</l><block s="reportListItem"><l>1</l><block var="else pairs"/></block></block><script><block s="doRun"><block s="reportListItem"><l>2</l><block s="reportListItem"><l>1</l><block var="else pairs"/></block></block><list></list></block></script><script><block s="doRun"><block var="self"/><list><block s="reportBoolean"><l><bool>false</bool></l></block><l></l><block s="reportCDR"><block var="else pairs"/></block></list></block></script></block></script></block></script></block></script></block-definition><block-definition s="run %&apos;#1&apos; %&apos;#2&apos;" type="command" category="control" selector="doRun" primitive="doRun"><header></header><code></code><translations></translations><inputs><input type="%cmdRing" readonly="true"></input><input type="%mult%s" readonly="true" expand="with inputs"></input></inputs><script><block s="doPrimitive"><l><bool>true</bool></l><l>doRun</l></block></script></block-definition><block-definition s="%&apos;#1&apos;" type="reporter" category="operators" selector="reportVariadicMax" primitive="reportVariadicMax"><header></header><code></code><translations></translations><inputs><input type="%mult%n" readonly="true" separator="max" collapse="maximum" initial="2"></input></inputs><script><block s="doPrimitive"><l><bool>true</bool></l><l>reportVariadicMax</l></block></script></block-definition><block-definition s="%&apos;#1&apos;" type="predicate" category="operators" selector="reportVariadicEquals" primitive="reportVariadicEquals"><header></header><code></code><translations></translations><inputs><input type="%mult%s" readonly="true" separator="=" collapse="all =" initial="2"></input></inputs><script><block s="doPrimitive"><l><bool>true</bool></l><l>reportVariadicEquals</l></block></script></block-definition><block-definition s="%&apos;#1&apos;" type="predicate" category="operators" selector="reportVariadicAnd" primitive="reportVariadicAnd"><header></header><code></code><translations></translations><inputs><input type="%mult%b" readonly="true" separator="and" collapse="all" initial="2"></input></inputs><script><block s="doPrimitive"><l><bool>true</bool></l><l>reportVariadicAnd</l></block></script></block-definition></primitives><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="false" penlog="false" volume="100" pan="0" lines="round" ternary="false" hyperops="true" codify="false" inheritance="true" sublistIDs="false" id="309"><pentrails>data:image/png;base64,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</pentrails><costumes><list struct="atomic" id="310"></list></costumes><sounds><list struct="atomic" id="311"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites select="1"><sprite name="Sprite" idx="1" x="37.75" y="168.25" heading="358.52" scale="0.5" volume="100" pan="0" rotation="0" draggable="false" hidden="true" costume="1" color="80,80,80,1" pen="tip" id="316"><costumes><list id="317"><item><ref mediaID="U5L2-SImulation_Sprite_cst_well"></ref></item><item><ref mediaID="U5L2-SImulation_Sprite_cst_sick"></ref></item></list></costumes><sounds><list struct="atomic" id="318"></list></sounds><blocks></blocks><variables><variable name="infected?"><bool>false</bool></variable><variable name="alreadycounted"><bool>false</bool></variable></variables><scripts><script x="16" y="29.5"><block s="receiveOnClone"></block><custom-block s="initialize clone"></custom-block><block s="doWaitUntil"><block var="clones ready?"><comment w="295.3333333333333" collapsed="true">This will be true when all the clones have been created.</comment></block></block><block s="doUntil"><block s="reportVariadicEquals"><list><block var="number infected"/><block var="population"/></list></block><script><block s="forward"><l>1</l></block><block s="bounceOffEdge"></block><block s="doIf"><block s="reportVariadicAnd"><list><block s="reportVariadicEquals"><list><custom-block s="touching infected person?"></custom-block><block s="reportBoolean"><l><bool>true</bool></l></block></list></block><block s="reportVariadicEquals"><list><block s="reportAttributeOf"><l><option>costume name</option></l><block s="reportGet"><l><option>self</option></l></block></block><l>well</l></list></block></list></block><script><block s="doSwitchToCostume"><l>sick</l></block><block s="doChangeVar"><l>number infected</l><l>1</l></block></script><list></list><comment w="135.33333333333334" collapsed="false">Wait until everyone is&#xD;infected.</comment></block></script></block></script><comment x="16" y="5" w="331.3333333333333" collapsed="true">There are things to write inside these blocks:</comment><script x="15" y="307.75"><block s="receiveGo"></block><block s="doResetTimer"></block><block s="doRun"><custom-block s="simulate disease, population: %n percent infected: %n speed: %n"><l>100</l><l>5</l><l>2</l></custom-block><list></list></block></script><script x="368" y="121.20000000000005"><custom-block s="average time for disease spread with population size: %n"><l></l></custom-block></script></scripts></sprite><watcher scope="Sprite" var="infected?" style="normal" x="9.999999999999545" y="10.000000000000007" color="243,118,29" hidden="true"/><watcher scope="Sprite" s="getCostumeIdx" style="normal" x="10" y="10" color="143,86,227" hidden="true"/><watcher scope="Sprite" var="alreadycounted" style="normal" x="10" y="31.000002000000002" color="243,118,29" hidden="true"/><watcher var="percent initially infected" style="normal" x="10" y="55.00000399999999" color="243,118,29" hidden="true"/><watcher var="number infected" style="normal" x="4.999999999999545" y="11.000001999999995" color="243,118,29" hidden="true"/><watcher var="population" style="normal" x="5" y="53.000005999999985" color="243,118,29" hidden="true"/><watcher var="Time:" style="normal" x="10" y="93.00000599999998" color="243,118,29"/></sprites></stage><variables><variable name="number infected"><l>100</l></variable><variable name="population"><l>100</l></variable><variable name="percent initially infected"><l>5</l></variable><variable name="speed"><l>2</l></variable><variable name="clones ready?"><bool>true</bool></variable><variable name="Time:"><l>0</l></variable></variables></scene></scenes></project><media name="U5L2-SImulation" app="Snap! 10.7.1, https://snap.berkeley.edu" version="2"><costume name="well" center-x="12" center-y="26" 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mediaID="U5L2-SImulation_Sprite_cst_well"/><costume name="sick" center-x="12" center-y="26" image="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABoAAAAyCAYAAABCtcuVAAAAAXNSR0IArs4c6QAABklJREFUWEftmE1sVNcVx3/n3vdmPDO2MQYTPsaAKYYqCQQ1/YiEohCpaSRwQJUSNl32a9FVd1122U3XVbvsIqniRqlaKW0CbaFF0KqQD1HSpCnBBONiDDYzY3s+3rv3tPfNOAViG7stWbS5o9HMSE/vN/ecc//n/J+wsiUKdhzi8gMYLMoEDkiF7POeS+51RQBMDVAYiFmbxAykEYXI4dRTSww33xnj5mchudd9lgUFyGw36/LrKGN4SOHTYs0aUp+o4Vpq7DsN1py79rfp6w9BaznYkiAFQy99jX72KnzeGh5DGUboEU8TYcobe95F9leN1L5+7WJ9cjnYoiAFYYDSfIHdkeEpFfaL8rAo67DkcaQIcyqMOxudUKPHii33BmPcEEgX29lSIDuzmS3dEU+I5Yj37BPYCOSwRBkIPDDrLX8ROOY8r87N8vbADWqrAeXnyuyOLUfEcBjPp4ASIZwREWkGUsCpMInhNI6XkjqnSteZkvafuGMttaNCvcye2PIswogqWxFyKJKBHA7NfnmEiipnPYzOtzjeP8HEYiW/KGgCiuvL7CHmKMohlDKQRxAsNgO1lxehgnJWldE44RirAV2BwgODPKyG50QYQRkEuu4AhR21QTc9nAFeTOY4WZri+opDdwFyWzeyM9fFERG+jGe4k6M7QwepGq444Zhz/DSp8nr/DNVO/laUo7gxxGYxPI1y1Hj2oPR9WAyeNORIlQZGLiS54suz+e5Xkun4Ynl8vCHtQlkclJ0diKZ3UoBCbxwxaJzfb33zoDgeNGSgKMtRGxQKYTaN47fqPWtfaZT6T0vavFqq3Kz1Vqp1xmndXhRZMXwXzLfWU+pZ2zWQCkMiOqzqh43qLvFut/U60AmdxWCyYhC8CvU0isda+dJ5b+wl8X4yTpIJQ/OyNpKrpTGmpSNNGWhiM8WeItsjm/uMeLdfPHtRXxY07CIPmV6brBjCy3fOiWTnqK5iaoqZV3zNIFcUeUNS/pDOpW/9aYobTwaVfxHswSHWx9Y+puiXxPvHBbYBxQzw0WBLdob+tRa+h8/QNm4pvK3K8bTJLysTvLsZ5kOfiZtbGXQ583SkOiKqjwL9WT7CCjtYyWrDw7ulMC7Kb7xjtF7lbN8tKhJKeXAH2yMTHzKkh43XfUBvB7EyyMIfaauFU+WaKCd8i580a5zprTKTgTYMMVSIo5HI62Hj3SNAD4JZyUYWuSZVmMRxUhNeaFU501Nj+n8HlK9xmvsdOpvwvK1x5r6DPrYcfWw7ssrzduZ+h045qSkvtGbud3nfDVKIKtsYzEfxF8X7Q+LdPtFMGYKQ2mxKaB/etqDe3soXZEczNXAimao3VRhz8FuUn83Oc37DFLNB60y1TJ8pde8z2npcnAujVZ9C3ni33ng2QOhRHfUOoDAFBWgbFL5XvGFKRWqIraXGvpcQn2qk6elfvN/4+zchybTswoPkNmvfJonsMC7doUZ6rHf9cbP+iLh0nwmDYxDZhR2lNBDiziRUVyOX0ih+kyh3KTVmpin5iVaU++u1yvzYo+/PVEPH/VA0z0K85gs7C7a7q2ASU+ypjO8qzFWesc49JZ4tt09B6rgsUO6Aqt7wpo/zP2+V+k9N9Q5MTuVL881mfv7AiRPNhba+mDrL9QFKXUX25oTnBA6K3gnyCb82hgMdUEWFc2IZnUs5fnGMq4u5i6UGyGKyhb1hrlM4dDfItfixtXzldlAYILuavMYEV1c8QCoU61vYa2KOyiKgZsKP8oav/segMKn2LQ/6Yd7wtU9AH+nGn4QunKN/q7z/D0OX8oO88I3/yjla0loaTEv5fk75dseZV0OOUhg1TV7rWqUEtc1yzLP/NMJtaymZqwiOQuue7xXgOxkomGU4KzCatjheWI2HfQ/ym8rsinOM4BkBtkvb/osappuOl7qErxM6q8k87B/V87Jfrf0PVubJbWzoMXwOeEI8QxLmcTDNXP7PPm3eKHgOiJJ4CZ2Vc87z+2Kdd5libllrebc8hFbe2MTGKMcOnzIgrt3O6/29F7RZ7S7OZc8enEZUU8MH6QyXX61SObrEY7VlbUlwGpugEHeH+QEbnBkbmLl1i66+FoWQr9oc6TzUfweNpSBtm7WC1THS2fULzxCyp18d971YqO6+7T8Ahl3uYA44uh4AAAAASUVORK5CYII=" mediaID="U5L2-SImulation_Sprite_cst_sick"/></media></snapdata>