<?php

$in = trim(fgets(STDIN));

for($j = 0; $j < $in; $j ++){
    $answer[] = 0;
}

for($i = 0; $i <= $in; $i ++){
    $man = [];
    $nyan = trim(fgets(STDIN));
    $man = explode(" " , $nyan);
    foreach($man as $key => $value){
        if($value == "nyanpass"){
            $answer[$key] += 1;
        }
    }
}

foreach($answer as $key_1 => $value_1){
    $key_pluss = $key_1 + 1;
    if($value_1 == 3){
        echo $key_pluss."\n";
    }
}