040000 tree 9a3b47d88e596682553db579d06bc6a0e206f5bb	algorithms
040000 tree bb198c7babeeda6821a55b79e59472afb19131de	any
040000 tree 2526e1326f6368e702e1446276362c4d15054db3	containers
040000 tree c028f53190cf386127ca924208aebf9e7bb41eea	memory
040000 tree 7be565ed3ca2f92dfb2a76afccc95f0f505d6423	utilities