040000 tree 083dd45d687b35ec294c5098d0d58c7e89723deb	math
040000 tree cd049c331428345806092c0911773d56429c20eb	stdlib
040000 tree 219331466865635c20e693384d9f636442726255	stdout
040000 tree 1938290b3d7927be518cc9bf1cafd899ee7cead1	string
040000 tree 4fb6b9c2aa791cc43958e98e3a73f4a1a6b7073f	time