echo utopianTree(5)."\n";function utopianTree($n) {
$val = 1;
for ($i = 0; $i < $n; $i++) {
if ($i%2 == 0) {
//doubled for each odd year
$val *= 2;
} else {
//increased by one for each even year
$val++;
}
}
return $val;
} by ვაჟა ტყემალაძე
3 years ago
ვაჟა ტყემალაძე
3 years ago
echo utopianTree(5)."\n";
function utopianTree($n){
$val=1;
if ($n%2){
$val=2*(pow (2,(floor($n/2) + 1)) - 1);
}else{
$val=pow(2, (floor($n/2 + 1)) - 1);
}
return $val;
}