viewimage.php?id=20bcc42e&no=24b0d769e1d32ca73ded8ffa11d028313550f9fb3f9dac8b24082c81c85b5a5b16d012ab080c82950acb21346988acbedd381b5cab75a97f6cc0a813ba21dce36a263fcedf60f5222a9f8c339784cf1aaca3603836645de0958b20e5f176bc1beaf2ef3d8f

(루트2 + 1)/2 맞나요??