<?php
function readInput()
{
return array_map(
'floatval',
explode(" ",trim(fgets(STDIN)))
);
}
function tipoQuadrante($x,$y)
{
if($x > 0 && $y > 0){return"primeiro";}
if($x < 0 && $y > 0){return"segundo";}
if($x < 0 && $y < 0){return"terceiro";}
if($x > 0 && $y < 0){return"quarto";}
}
do {
$boll =true;
[$x,$y] =readInput();
if ($x == 0 || $y == 0) {
$boll=false;
}else{
echo tipoQuadrante($x,$y) . PHP_EOL;
}
} while ($boll);
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