040000 tree 7e2205c5438b09f02536778edb2bff111c924e71	21_strings
040000 tree 86d3facb686b34de52ccb2ead3de3740ba28e0ff	22_locale
040000 tree a51c4c9810a151cd5f4467ce7facc67210f0da7d	23_containers
040000 tree e12fe7dba15003c34e62866af0524af03e1ca0c7	25_algorithms
040000 tree cd1301a8d5ff2097c75fe73e90603a527b046688	26_numerics
040000 tree 4456a3b3347a67074676bcaa01c50f02250b5943	27_io
040000 tree d079cca907ac71100e2ae7115be50bc34855ffe5	28_regex
040000 tree 702f8f28c1bc66459d7603b76687fdea7c15a870	30_threads
040000 tree 8da306482f9c9637699c21fbe100d69584c37a46	ext