<html>
<head>
<?php
$a= -7; $b= 6;
$n=1001; $m=500; $x = array(); $y = array();
for ($i=0; $i<=$m; $i++) { $x[]=$a+($b-$a)/$m*$i; };
for ($i=0; $i<=$m; $i++) { $y[] =
pow($x[$i]-1,2)/2-3
; };
for ($i=$m+1; $i<=$n; $i++) { $x[]=$a+($b-$a)/$m*($i-501); };
for ($i=$m+1; $i<=$n; $i++) { $y[] =
5-2*$x[$i]
; };

$dataPoints = array(
 array("x" => $x[0], "y" => $y[0]),
 array("x" => $x[1], "y" => $y[1]),
 array("x" => $x[2], "y" => $y[2]),
 array("x" => $x[3], "y" => $y[3]),
 array("x" => $x[4], "y" => $y[4]),
 array("x" => $x[5], "y" => $y[5]),
 array("x" => $x[6], "y" => $y[6]),
 array("x" => $x[7], "y" => $y[7]),
 array("x" => $x[8], "y" => $y[8]),
 array("x" => $x[9], "y" => $y[9]),
 array("x" => $x[10], "y" => $y[10]),
 array("x" => $x[11], "y" => $y[11]),
 array("x" => $x[12], "y" => $y[12]),
 array("x" => $x[13], "y" => $y[13]),
 array("x" => $x[14], "y" => $y[14]),
 array("x" => $x[15], "y" => $y[15]),
 array("x" => $x[16], "y" => $y[16]),
 array("x" => $x[17], "y" => $y[17]),
 array("x" => $x[18], "y" => $y[18]),
 array("x" => $x[19], "y" => $y[19]),
 array("x" => $x[20], "y" => $y[20]),
 array("x" => $x[21], "y" => $y[21]),
 array("x" => $x[22], "y" => $y[22]),
 array("x" => $x[23], "y" => $y[23]),
 array("x" => $x[24], "y" => $y[24]),
 array("x" => $x[25], "y" => $y[25]),
 array("x" => $x[26], "y" => $y[26]),
 array("x" => $x[27], "y" => $y[27]),
 array("x" => $x[28], "y" => $y[28]),
 array("x" => $x[29], "y" => $y[29]),
 array("x" => $x[30], "y" => $y[30]),
 array("x" => $x[31], "y" => $y[31]),
 array("x" => $x[32], "y" => $y[32]),
 array("x" => $x[33], "y" => $y[33]),
 array("x" => $x[34], "y" => $y[34]),
 array("x" => $x[35], "y" => $y[35]),
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 array("x" => $x[37], "y" => $y[37]),
 array("x" => $x[38], "y" => $y[38]),
 array("x" => $x[39], "y" => $y[39]),
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 array("x" => $x[43], "y" => $y[43]),
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 array("x" => $x[63], "y" => $y[63]),
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 array("x" => $x[94], "y" => $y[94]),
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 array("x" => $x[125], "y" => $y[125]),
 array("x" => $x[126], "y" => $y[126]),
 array("x" => $x[127], "y" => $y[127]),
 array("x" => $x[128], "y" => $y[128]),
 array("x" => $x[129], "y" => $y[129]),
 array("x" => $x[130], "y" => $y[130]),
 array("x" => $x[131], "y" => $y[131]),
 array("x" => $x[132], "y" => $y[132]),
 array("x" => $x[133], "y" => $y[133]),
 array("x" => $x[134], "y" => $y[134]),
 array("x" => $x[135], "y" => $y[135]),
 array("x" => $x[136], "y" => $y[136]),
 array("x" => $x[137], "y" => $y[137]),
 array("x" => $x[138], "y" => $y[138]),
 array("x" => $x[139], "y" => $y[139]),
 array("x" => $x[140], "y" => $y[140]),
 array("x" => $x[141], "y" => $y[141]),
 array("x" => $x[142], "y" => $y[142]),
 array("x" => $x[143], "y" => $y[143]),
 array("x" => $x[144], "y" => $y[144]),
 array("x" => $x[145], "y" => $y[145]),
 array("x" => $x[146], "y" => $y[146]),
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 array("x" => $x[379], "y" => $y[379]),
 array("x" => $x[380], "y" => $y[380]),
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 array("x" => $x[383], "y" => $y[383]),
 array("x" => $x[384], "y" => $y[384]),
 array("x" => $x[385], "y" => $y[385]),
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 array("x" => $x[388], "y" => $y[388]),
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 array("x" => $x[390], "y" => $y[390]),
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 array("x" => $x[395], "y" => $y[395]),
 array("x" => $x[396], "y" => $y[396]),
 array("x" => $x[397], "y" => $y[397]),
 array("x" => $x[398], "y" => $y[398]),
 array("x" => $x[399], "y" => $y[399]),
 array("x" => $x[400], "y" => $y[400]),
 array("x" => $x[401], "y" => $y[401]),
 array("x" => $x[402], "y" => $y[402]),
 array("x" => $x[403], "y" => $y[403]),
 array("x" => $x[404], "y" => $y[404]),
 array("x" => $x[405], "y" => $y[405]),
 array("x" => $x[406], "y" => $y[406]),
 array("x" => $x[407], "y" => $y[407]),
 array("x" => $x[408], "y" => $y[408]),
 array("x" => $x[409], "y" => $y[409]),
 array("x" => $x[410], "y" => $y[410]),
 array("x" => $x[411], "y" => $y[411]),
 array("x" => $x[412], "y" => $y[412]),
 array("x" => $x[413], "y" => $y[413]),
 array("x" => $x[414], "y" => $y[414]),
 array("x" => $x[415], "y" => $y[415]),
 array("x" => $x[416], "y" => $y[416]),
 array("x" => $x[417], "y" => $y[417]),
 array("x" => $x[418], "y" => $y[418]),
 array("x" => $x[419], "y" => $y[419]),
 array("x" => $x[420], "y" => $y[420]),
 array("x" => $x[421], "y" => $y[421]),
 array("x" => $x[422], "y" => $y[422]),
 array("x" => $x[423], "y" => $y[423]),
 array("x" => $x[424], "y" => $y[424]),
 array("x" => $x[425], "y" => $y[425]),
 array("x" => $x[426], "y" => $y[426]),
 array("x" => $x[427], "y" => $y[427]),
 array("x" => $x[428], "y" => $y[428]),
 array("x" => $x[429], "y" => $y[429]),
 array("x" => $x[430], "y" => $y[430]),
 array("x" => $x[431], "y" => $y[431]),
 array("x" => $x[432], "y" => $y[432]),
 array("x" => $x[433], "y" => $y[433]),
 array("x" => $x[434], "y" => $y[434]),
 array("x" => $x[435], "y" => $y[435]),
 array("x" => $x[436], "y" => $y[436]),
 array("x" => $x[437], "y" => $y[437]),
 array("x" => $x[438], "y" => $y[438]),
 array("x" => $x[439], "y" => $y[439]),
 array("x" => $x[440], "y" => $y[440]),
 array("x" => $x[441], "y" => $y[441]),
 array("x" => $x[442], "y" => $y[442]),
 array("x" => $x[443], "y" => $y[443]),
 array("x" => $x[444], "y" => $y[444]),
 array("x" => $x[445], "y" => $y[445]),
 array("x" => $x[446], "y" => $y[446]),
 array("x" => $x[447], "y" => $y[447]),
 array("x" => $x[448], "y" => $y[448]),
 array("x" => $x[449], "y" => $y[449]),
 array("x" => $x[450], "y" => $y[450]),
 array("x" => $x[451], "y" => $y[451]),
 array("x" => $x[452], "y" => $y[452]),
 array("x" => $x[453], "y" => $y[453]),
 array("x" => $x[454], "y" => $y[454]),
 array("x" => $x[455], "y" => $y[455]),
 array("x" => $x[456], "y" => $y[456]),
 array("x" => $x[457], "y" => $y[457]),
 array("x" => $x[458], "y" => $y[458]),
 array("x" => $x[459], "y" => $y[459]),
 array("x" => $x[460], "y" => $y[460]),
 array("x" => $x[461], "y" => $y[461]),
 array("x" => $x[462], "y" => $y[462]),
 array("x" => $x[463], "y" => $y[463]),
 array("x" => $x[464], "y" => $y[464]),
 array("x" => $x[465], "y" => $y[465]),
 array("x" => $x[466], "y" => $y[466]),
 array("x" => $x[467], "y" => $y[467]),
 array("x" => $x[468], "y" => $y[468]),
 array("x" => $x[469], "y" => $y[469]),
 array("x" => $x[470], "y" => $y[470]),
 array("x" => $x[471], "y" => $y[471]),
 array("x" => $x[472], "y" => $y[472]),
 array("x" => $x[473], "y" => $y[473]),
 array("x" => $x[474], "y" => $y[474]),
 array("x" => $x[475], "y" => $y[475]),
 array("x" => $x[476], "y" => $y[476]),
 array("x" => $x[477], "y" => $y[477]),
 array("x" => $x[478], "y" => $y[478]),
 array("x" => $x[479], "y" => $y[479]),
 array("x" => $x[480], "y" => $y[480]),
 array("x" => $x[481], "y" => $y[481]),
 array("x" => $x[482], "y" => $y[482]),
 array("x" => $x[483], "y" => $y[483]),
 array("x" => $x[484], "y" => $y[484]),
 array("x" => $x[485], "y" => $y[485]),
 array("x" => $x[486], "y" => $y[486]),
 array("x" => $x[487], "y" => $y[487]),
 array("x" => $x[488], "y" => $y[488]),
 array("x" => $x[489], "y" => $y[489]),
 array("x" => $x[490], "y" => $y[490]),
 array("x" => $x[491], "y" => $y[491]),
 array("x" => $x[492], "y" => $y[492]),
 array("x" => $x[493], "y" => $y[493]),
 array("x" => $x[494], "y" => $y[494]),
 array("x" => $x[495], "y" => $y[495]),
 array("x" => $x[496], "y" => $y[496]),
 array("x" => $x[497], "y" => $y[497]),
 array("x" => $x[498], "y" => $y[498]),
 array("x" => $x[499], "y" => $y[499]),
 array("x" => $x[500], "y" => $y[500]),

 array("x" => 6, "y" => -10+0.05),
 array("x" => 6, "y" =>  30-0.05),
 array("x" => -7, "y" =>  30-0.05),
 array("x" => -7, "y" => -10+0.05),
 array("x" => 6, "y" =>  -10+0.05),
 array("x" => -7, "y" =>  -10+0.05),
 array("x" => -7, "y" => 0),
 array("x" => 6, "y" => 0),
 array("x" => 0, "y" => 0),
 array("x" => 0, "y" => 30-0.05),
 array("x" => 0, "y" => -10+0.05),
 array("x" => -7, "y" => -10+0.05),

 array("x" => $x[501], "y" => $y[501]),
 array("x" => $x[502], "y" => $y[502]),
 array("x" => $x[503], "y" => $y[503]),
 array("x" => $x[504], "y" => $y[504]),
 array("x" => $x[505], "y" => $y[505]),
 array("x" => $x[506], "y" => $y[506]),
 array("x" => $x[507], "y" => $y[507]),
 array("x" => $x[508], "y" => $y[508]),
 array("x" => $x[509], "y" => $y[509]),
 array("x" => $x[510], "y" => $y[510]),
 array("x" => $x[511], "y" => $y[511]),
 array("x" => $x[512], "y" => $y[512]),
 array("x" => $x[513], "y" => $y[513]),
 array("x" => $x[514], "y" => $y[514]),
 array("x" => $x[515], "y" => $y[515]),
 array("x" => $x[516], "y" => $y[516]),
 array("x" => $x[517], "y" => $y[517]),
 array("x" => $x[518], "y" => $y[518]),
 array("x" => $x[519], "y" => $y[519]),
 array("x" => $x[520], "y" => $y[520]),
 array("x" => $x[521], "y" => $y[521]),
 array("x" => $x[522], "y" => $y[522]),
 array("x" => $x[523], "y" => $y[523]),
 array("x" => $x[524], "y" => $y[524]),
 array("x" => $x[525], "y" => $y[525]),
 array("x" => $x[526], "y" => $y[526]),
 array("x" => $x[527], "y" => $y[527]),
 array("x" => $x[528], "y" => $y[528]),
 array("x" => $x[529], "y" => $y[529]),
 array("x" => $x[530], "y" => $y[530]),
 array("x" => $x[531], "y" => $y[531]),
 array("x" => $x[532], "y" => $y[532]),
 array("x" => $x[533], "y" => $y[533]),
 array("x" => $x[534], "y" => $y[534]),
 array("x" => $x[535], "y" => $y[535]),
 array("x" => $x[536], "y" => $y[536]),
 array("x" => $x[537], "y" => $y[537]),
 array("x" => $x[538], "y" => $y[538]),
 array("x" => $x[539], "y" => $y[539]),
 array("x" => $x[540], "y" => $y[540]),
 array("x" => $x[541], "y" => $y[541]),
 array("x" => $x[542], "y" => $y[542]),
 array("x" => $x[543], "y" => $y[543]),
 array("x" => $x[544], "y" => $y[544]),
 array("x" => $x[545], "y" => $y[545]),
 array("x" => $x[546], "y" => $y[546]),
 array("x" => $x[547], "y" => $y[547]),
 array("x" => $x[548], "y" => $y[548]),
 array("x" => $x[549], "y" => $y[549]),
 array("x" => $x[550], "y" => $y[550]),
 array("x" => $x[551], "y" => $y[551]),
 array("x" => $x[552], "y" => $y[552]),
 array("x" => $x[553], "y" => $y[553]),
 array("x" => $x[554], "y" => $y[554]),
 array("x" => $x[555], "y" => $y[555]),
 array("x" => $x[556], "y" => $y[556]),
 array("x" => $x[557], "y" => $y[557]),
 array("x" => $x[558], "y" => $y[558]),
 array("x" => $x[559], "y" => $y[559]),
 array("x" => $x[560], "y" => $y[560]),
 array("x" => $x[561], "y" => $y[561]),
 array("x" => $x[562], "y" => $y[562]),
 array("x" => $x[563], "y" => $y[563]),
 array("x" => $x[564], "y" => $y[564]),
 array("x" => $x[565], "y" => $y[565]),
 array("x" => $x[566], "y" => $y[566]),
 array("x" => $x[567], "y" => $y[567]),
 array("x" => $x[568], "y" => $y[568]),
 array("x" => $x[569], "y" => $y[569]),
 array("x" => $x[570], "y" => $y[570]),
 array("x" => $x[571], "y" => $y[571]),
 array("x" => $x[572], "y" => $y[572]),
 array("x" => $x[573], "y" => $y[573]),
 array("x" => $x[574], "y" => $y[574]),
 array("x" => $x[575], "y" => $y[575]),
 array("x" => $x[576], "y" => $y[576]),
 array("x" => $x[577], "y" => $y[577]),
 array("x" => $x[578], "y" => $y[578]),
 array("x" => $x[579], "y" => $y[579]),
 array("x" => $x[580], "y" => $y[580]),
 array("x" => $x[581], "y" => $y[581]),
 array("x" => $x[582], "y" => $y[582]),
 array("x" => $x[583], "y" => $y[583]),
 array("x" => $x[584], "y" => $y[584]),
 array("x" => $x[585], "y" => $y[585]),
 array("x" => $x[586], "y" => $y[586]),
 array("x" => $x[587], "y" => $y[587]),
 array("x" => $x[588], "y" => $y[588]),
 array("x" => $x[589], "y" => $y[589]),
 array("x" => $x[590], "y" => $y[590]),
 array("x" => $x[591], "y" => $y[591]),
 array("x" => $x[592], "y" => $y[592]),
 array("x" => $x[593], "y" => $y[593]),
 array("x" => $x[594], "y" => $y[594]),
 array("x" => $x[595], "y" => $y[595]),
 array("x" => $x[596], "y" => $y[596]),
 array("x" => $x[597], "y" => $y[597]),
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 array("x" => $x[599], "y" => $y[599]),
 array("x" => $x[600], "y" => $y[600]),
 array("x" => $x[601], "y" => $y[601]),
 array("x" => $x[602], "y" => $y[602]),
 array("x" => $x[603], "y" => $y[603]),
 array("x" => $x[604], "y" => $y[604]),
 array("x" => $x[605], "y" => $y[605]),
 array("x" => $x[606], "y" => $y[606]),
 array("x" => $x[607], "y" => $y[607]),
 array("x" => $x[608], "y" => $y[608]),
 array("x" => $x[609], "y" => $y[609]),
 array("x" => $x[610], "y" => $y[610]),
 array("x" => $x[611], "y" => $y[611]),
 array("x" => $x[612], "y" => $y[612]),
 array("x" => $x[613], "y" => $y[613]),
 array("x" => $x[614], "y" => $y[614]),
 array("x" => $x[615], "y" => $y[615]),
 array("x" => $x[616], "y" => $y[616]),
 array("x" => $x[617], "y" => $y[617]),
 array("x" => $x[618], "y" => $y[618]),
 array("x" => $x[619], "y" => $y[619]),
 array("x" => $x[620], "y" => $y[620]),
 array("x" => $x[621], "y" => $y[621]),
 array("x" => $x[622], "y" => $y[622]),
 array("x" => $x[623], "y" => $y[623]),
 array("x" => $x[624], "y" => $y[624]),
 array("x" => $x[625], "y" => $y[625]),
 array("x" => $x[626], "y" => $y[626]),
 array("x" => $x[627], "y" => $y[627]),
 array("x" => $x[628], "y" => $y[628]),
 array("x" => $x[629], "y" => $y[629]),
 array("x" => $x[630], "y" => $y[630]),
 array("x" => $x[631], "y" => $y[631]),
 array("x" => $x[632], "y" => $y[632]),
 array("x" => $x[633], "y" => $y[633]),
 array("x" => $x[634], "y" => $y[634]),
 array("x" => $x[635], "y" => $y[635]),
 array("x" => $x[636], "y" => $y[636]),
 array("x" => $x[637], "y" => $y[637]),
 array("x" => $x[638], "y" => $y[638]),
 array("x" => $x[639], "y" => $y[639]),
 array("x" => $x[640], "y" => $y[640]),
 array("x" => $x[641], "y" => $y[641]),
 array("x" => $x[642], "y" => $y[642]),
 array("x" => $x[643], "y" => $y[643]),
 array("x" => $x[644], "y" => $y[644]),
 array("x" => $x[645], "y" => $y[645]),
 array("x" => $x[646], "y" => $y[646]),
 array("x" => $x[647], "y" => $y[647]),
 array("x" => $x[648], "y" => $y[648]),
 array("x" => $x[649], "y" => $y[649]),
 array("x" => $x[650], "y" => $y[650]),
 array("x" => $x[651], "y" => $y[651]),
 array("x" => $x[652], "y" => $y[652]),
 array("x" => $x[653], "y" => $y[653]),
 array("x" => $x[654], "y" => $y[654]),
 array("x" => $x[655], "y" => $y[655]),
 array("x" => $x[656], "y" => $y[656]),
 array("x" => $x[657], "y" => $y[657]),
 array("x" => $x[658], "y" => $y[658]),
 array("x" => $x[659], "y" => $y[659]),
 array("x" => $x[660], "y" => $y[660]),
 array("x" => $x[661], "y" => $y[661]),
 array("x" => $x[662], "y" => $y[662]),
 array("x" => $x[663], "y" => $y[663]),
 array("x" => $x[664], "y" => $y[664]),
 array("x" => $x[665], "y" => $y[665]),
 array("x" => $x[666], "y" => $y[666]),
 array("x" => $x[667], "y" => $y[667]),
 array("x" => $x[668], "y" => $y[668]),
 array("x" => $x[669], "y" => $y[669]),
 array("x" => $x[670], "y" => $y[670]),
 array("x" => $x[671], "y" => $y[671]),
 array("x" => $x[672], "y" => $y[672]),
 array("x" => $x[673], "y" => $y[673]),
 array("x" => $x[674], "y" => $y[674]),
 array("x" => $x[675], "y" => $y[675]),
 array("x" => $x[676], "y" => $y[676]),
 array("x" => $x[677], "y" => $y[677]),
 array("x" => $x[678], "y" => $y[678]),
 array("x" => $x[679], "y" => $y[679]),
 array("x" => $x[680], "y" => $y[680]),
 array("x" => $x[681], "y" => $y[681]),
 array("x" => $x[682], "y" => $y[682]),
 array("x" => $x[683], "y" => $y[683]),
 array("x" => $x[684], "y" => $y[684]),
 array("x" => $x[685], "y" => $y[685]),
 array("x" => $x[686], "y" => $y[686]),
 array("x" => $x[687], "y" => $y[687]),
 array("x" => $x[688], "y" => $y[688]),
 array("x" => $x[689], "y" => $y[689]),
 array("x" => $x[690], "y" => $y[690]),
 array("x" => $x[691], "y" => $y[691]),
 array("x" => $x[692], "y" => $y[692]),
 array("x" => $x[693], "y" => $y[693]),
 array("x" => $x[694], "y" => $y[694]),
 array("x" => $x[695], "y" => $y[695]),
 array("x" => $x[696], "y" => $y[696]),
 array("x" => $x[697], "y" => $y[697]),
 array("x" => $x[698], "y" => $y[698]),
 array("x" => $x[699], "y" => $y[699]),
 array("x" => $x[700], "y" => $y[700]),
 array("x" => $x[701], "y" => $y[701]),
 array("x" => $x[702], "y" => $y[702]),
 array("x" => $x[703], "y" => $y[703]),
 array("x" => $x[704], "y" => $y[704]),
 array("x" => $x[705], "y" => $y[705]),
 array("x" => $x[706], "y" => $y[706]),
 array("x" => $x[707], "y" => $y[707]),
 array("x" => $x[708], "y" => $y[708]),
 array("x" => $x[709], "y" => $y[709]),
 array("x" => $x[710], "y" => $y[710]),
 array("x" => $x[711], "y" => $y[711]),
 array("x" => $x[712], "y" => $y[712]),
 array("x" => $x[713], "y" => $y[713]),
 array("x" => $x[714], "y" => $y[714]),
 array("x" => $x[715], "y" => $y[715]),
 array("x" => $x[716], "y" => $y[716]),
 array("x" => $x[717], "y" => $y[717]),
 array("x" => $x[718], "y" => $y[718]),
 array("x" => $x[719], "y" => $y[719]),
 array("x" => $x[720], "y" => $y[720]),
 array("x" => $x[721], "y" => $y[721]),
 array("x" => $x[722], "y" => $y[722]),
 array("x" => $x[723], "y" => $y[723]),
 array("x" => $x[724], "y" => $y[724]),
 array("x" => $x[725], "y" => $y[725]),
 array("x" => $x[726], "y" => $y[726]),
 array("x" => $x[727], "y" => $y[727]),
 array("x" => $x[728], "y" => $y[728]),
 array("x" => $x[729], "y" => $y[729]),
 array("x" => $x[730], "y" => $y[730]),
 array("x" => $x[731], "y" => $y[731]),
 array("x" => $x[732], "y" => $y[732]),
 array("x" => $x[733], "y" => $y[733]),
 array("x" => $x[734], "y" => $y[734]),
 array("x" => $x[735], "y" => $y[735]),
 array("x" => $x[736], "y" => $y[736]),
 array("x" => $x[737], "y" => $y[737]),
 array("x" => $x[738], "y" => $y[738]),
 array("x" => $x[739], "y" => $y[739]),
 array("x" => $x[740], "y" => $y[740]),
 array("x" => $x[741], "y" => $y[741]),
 array("x" => $x[742], "y" => $y[742]),
 array("x" => $x[743], "y" => $y[743]),
 array("x" => $x[744], "y" => $y[744]),
 array("x" => $x[745], "y" => $y[745]),
 array("x" => $x[746], "y" => $y[746]),
 array("x" => $x[747], "y" => $y[747]),
 array("x" => $x[748], "y" => $y[748]),
 array("x" => $x[749], "y" => $y[749]),
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