<?php

$n = intval(readline());
$nueArr = [];
for ($i = 0; $i < $n; $i++) {
    $args = explode(" ", readline());
    $name = $args[0];
    $type = $args[2];

    if ($type === "going!") {
        if (isset($name, $args)) {
            if (!in_array($name, $nueArr)) {
                $nueArr[] = $name;

            } else {
                echo "$name is already in the list!" . PHP_EOL;
            }
        }
    }
    if ($type === "not") {
        if (!in_array($name, $nueArr)) {
            echo "$name is not in the list!" . PHP_EOL;
        }
        if (in_array($name, $nueArr)){
            $index = array_search( $name,$nueArr);
            array_splice($nueArr,$index,1);
        }
    }

    }
    for ($i = 0; $i < count($nueArr); $i++) {
        echo $nueArr[$i] . PHP_EOL;
    }