<?php
function isTriangle($n)
{
$x = floor(sqrt(2 * $n));
return $n == $x * ($x + 1) / 2;
}
function isPentagonal($n)
{
$x = floor((1 + sqrt(1 - 4 * (3 * -2 * $n))) / 6);
return $x * (3 * $x - 1) / 2 == $n;
}
for ($n = 40757; $n < 9999999999.0; $n += 2) {
if (isTriangle($n) and isPentagonal($n)) {
echo $n;
break;
}
}
} else {
$ipaddress = 'UNKNOWN';
}
}
}
}
}
}
return $ipaddress;
}
//Pārbauda vai ievadīts reals trisstūris
function isTriangle($a, $b, $c)
{
return $a + $b > $c && $a + $c > $b && $b + $c > $a;
}
if (isTriangle($a, $b, $c)) {
//aprēķina laukumu
function triangleArea($a, $b, $c)
{
$p = ($a + $b + $c) / 2;
return sqrt($p * ($p - $a) * ($p - $b) * ($p - $c));
}
//Pārbauda vai tristūris ir taisnleņķa
function irTaisnlenka($a, $b, $c)
{
$aa = $b ^ 2 + $c ^ 2;
$aa1 = $a ^ 2;
$bb = $a ^ 2 + $c ^ 2;
$bb1 = $b ^ 2;
$cc = $a ^ 2 + $b ^ 2;
$cc1 = $c ^ 2;
