25 lines
376 B
PHP
25 lines
376 B
PHP
<?php
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/*
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* Gnieark's anwser to euler problem 9
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* https://projecteuler.net/problem=9
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*/
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/*
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a²+b²=c²
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a+b+c=1000
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so a+b+sqrt(a²+b²) = 1000
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and
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c²> a²
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a<c<1000
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a and b <500
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*/
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for($a=1;$a<501;$a++){
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for($b=1;$b<501;$b++){
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if($a+$b+sqrt(pow($a,2)+pow($b,2)) == 1000){
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echo ($a*$b*sqrt(pow($a,2)+pow($b,2)));
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break 2;
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}
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}
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} |