040000 tree d0389283f8442073dbfcafc7b0ccaa365cf369f2	cstdlib
040000 tree 4d002fad4e745f41ad372d6316c87acfc5b7ab46	cstring
040000 tree 21f870c5ec518fff7002ffcde60048fe0ed6bf24	ctime
040000 tree b799d96574ad12014f94e2bf7790d202001eb17d	functional
040000 tree c1e272ae92a861e68f90446e68bd111638d663cb	memory
040000 tree 7df2175e0b26cb8c7ae15786690fe146ec6d1a4d	type_traits
040000 tree 1a96c93a47ca86b7b6a6c2c373db696e481009cd	utility