memo / array_merge_recursive

<?php
    // 自分の得意な言語で
    // Let's チャレンジ！！

    $num = trim(fgets(STDIN));
    $hoge = array();
    
    for ($i = 0; $i < $num; $i++) {
        $s =  explode(" ",trim(fgets(STDIN)));
        //echo "hello = ".$s[0]." , world = ".$s[1]."\n";
        $hoge = array_merge_recursive($hoge, array($s[0]=>$s[1]));
    }
    
    print_r($hoge);
    


?>

入力

7
A 1
D 6
C 2
G 4
B 70
A 10
B 5

出力結果

Array
(
[A] => Array
(
[0] => 1
[1] => 10
)

[D] => 6
[C] => 2
[G] => 4
[B] => Array
(
[0] => 70
[1] => 5
)

)